Transfer Mode fails in Weight Paint when trying to transfer a 2nd time #74
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Reference: Triager-bot/blender-bug-reports#74
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Original bug report: https://projects.blender.org/blender/blender/issues/157277
System Information
Operating system: Windows 11
Graphics card: Nvidia Geforce GTX 1660
Blender Version
Broken: (5.1.0)
Worked: (4.4.3)
Transfer Mode between objects while in Weight Paint Mode only works once.
As soon as I skinned multiple objects to an armature and want to switch between the objects in Weight Paint mode via Transfer Mode (alt + Q) I can only switch once. As soon as i want to switch to another or back to the first object I get the "No target object to transfer the mode to" Error Report.
Report is clear
LLM Reasoning
Got it, let's see. The bug report has a clear title and body. The steps to reproduce are described: using Transfer Mode (alt + Q) in Weight Paint when switching between objects skinned to an armature. It says it only works once, then gives the error. So the description is clear enough. So the answer should be Yes.
JSON Data
{
"llm_judgement": true,
"processing_time": 5.42998
}
Report is specific
LLM Reasoning
Got it, let's analyze this bug report. The title is "Transfer Mode fails in Weight Paint when trying to transfer a 2nd time". The body explains that Transfer Mode between objects in Weight Paint works once but fails on the second try, leading to an error. So it's about a specific scenario: transferring mode a second time in Weight Paint. That's a specific issue because it's not just "crashing while rendering" (generic) but a particular action (second transfer) causing failure. So the answer should be 'Specific'.
JSON Data
{
"llm_judgement": true,
"processing_time": 7.401754
}
Report flagged as NOT a duplicate by LLM
Weight Paint mode switch brush turns Auto Normalize and Multi-Paint on
https://projects.blender.org/blender/blender/issues/155727
System Information
Operating system: Windows-10-10.0.19045-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 2070 NVIDIA Corporation NVIDIA 581.15 Vulkan Backend
Blender Version
Broken: version: 5.1.0 Release Candidate, branch: blender-v5.1-release, commit date: 2026-03-15 19:59, hash:
2342a2198f19Worked: (newest version of Blender that worked as expected)
Short description of error
If Auto Normalize or Multi-Paint are ticked off switching from weight paint mode to another mode seems to reactivate them for any brush.
Exact steps for others to reproduce the error
Based on the default startup file.
LLM Reasoning
Got it, let's analyze these two bug reports. First, look at the descriptions and steps.
Bug report 1 is about Transfer Mode in Weight Paint failing after the first use—can't switch between objects again. The issue is with transferring mode between objects, getting an error on subsequent switches.
Bug report 2 is about Auto Normalize and Multi-Paint being reactivated when switching modes. The steps involve unchecking those options, switching to another mode, then back to Weight Paint, and seeing them turned on again.
These are different issues: one is about transferring mode between objects (Transfer Mode), the other is about brush settings (Auto Normalize/Multi-Paint) toggling incorrectly during mode switches. So they're not duplicates.
JSON Data
{
"llm_judgement": false,
"processing_time": 9.844378,
"duplicate_report_number": "155727"
}
Report flagged as NOT a duplicate by LLM
Regression: Weight Slider in weight paint mode not working
https://projects.blender.org/blender/blender/issues/118082
System Information
Operating system: Windows 10
Graphics card: Nvidia GTX 1050TI
Blender Version
Broken: 4.0.0
Worked: 4.0.0
Short description of error
in weight paint mode, it only paints with the weight 1 changing that does nothing
Exact steps for others to reproduce the error
Open the attached .blend file then Select the armature shift click the mesh then go into weight paint mode select a bone and then paint (see attached video)
LLM Reasoning
Got it, let's analyze these two bug reports. First, look at the descriptions and steps.
Bug report 1 is about Transfer Mode in Weight Paint failing after the first use—can't switch between objects again. The issue is with transferring mode between objects, getting an error on subsequent attempts.
Bug report 2 is about the weight slider not working in Weight Paint; it only paints with weight 1, and changing the slider does nothing. The steps involve opening a .blend file, selecting armature and mesh, going into weight paint, selecting a bone, and painting.
These are different issues: one is about transferring mode between objects (Transfer Mode), the other is about the weight slider functionality. So they're not duplicates.
JSON Data
{
"llm_judgement": false,
"processing_time": 9.612105,
"duplicate_report_number": "118082"
}
Report flagged as NOT a duplicate by LLM
Bone select option is lost when Alt+Q an outside object in weight paint mode, Lock Objects Mode off not helping.
https://projects.blender.org/blender/blender/issues/123623
System Information
Windows 10
NVidia RTX2060
Blender Version
Broken: 4.1
Worked: perhaps never? Just realized it was a thing.
Maybe not so much a bug as a missing feature unless it's intended to work the way I'm expecting but forgotten, but if you select the skeleton, shift and select the mesh, then go into weight mode, it provides a means to select bones while painting weights. While in weight mode if you have objects that share a skeleton, you can select them with alt+q, like you can in other edit modes, but the bone select option is lost. This makes the workflow longer, as you have to go back to Object mode and select the skeleton again, select the other object, then go into weight mode.
Edit > Unlock Edit Modes helps a little but still loses the option when simply clicking or alt_q on another object since the model modes are unlocked some objects may revert to object mode rather than weight mode. I have to do the same thing to get it back as I did in the previous use case.
I understand I could weight paint them all in one mesh then separate the individuals, that's usually how I start, however, if I need to add something or make a correction to geometry when they are separated, I'd have to combine them all again, then rename them again. I know there are other tricks to ease that, like if each object has just one vertex group, I can technically write a script that gets that vertex group name and names the object with it. But this is too much of a workaround for a workflow that should work intuitively since blender supports simultaneous editing type methods and switching between objects with alt+q.
LLM Reasoning
Got it, let's analyze these two bug reports. First, look at the key parts: description and steps to reproduce.
Bug report 1 is about Transfer Mode (Alt+Q) in Weight Paint mode failing after the first use when switching between objects. The issue is that after transferring once, trying to switch again gives an error "No target object".
Bug report 2 is about Bone select option being lost when using Alt+Q on another object in weight paint mode. The user says that when they select skeleton and mesh, go into weight mode, then use Alt+Q to switch objects, the bone select option disappears, requiring them to go back to Object mode.
Wait, but are these the same issue? Let's check the core problem. Report 1 is about Transfer Mode failing (error after first use), report 2 is about losing bone select when switching objects with Alt+Q. The steps and symptoms are different: one has an error message, the other loses a feature (bone select). So they're not the same issue. Therefore, the answer is No.
JSON Data
{
"llm_judgement": false,
"processing_time": 14.966298,
"duplicate_report_number": "123623"
}
Report flagged as NOT a duplicate by LLM
Sculpt Redo Broken with transfer mode operator
https://projects.blender.org/blender/blender/issues/130420
System Information
Operating system: Windows-10-10.0.19045-SP0 64 Bits
Graphics card: NVIDIA GeForce GTX 1070 Ti/PCIe/SSE2 NVIDIA Corporation 4.6.0 NVIDIA 566.14 Opengl Backend
Blender Version
Broken: version: 4.3.0 Release Candidate, branch: blender-v4.3-release, commit date: 2024-11-15 16:01, hash:
d3d26233fcb8Worked: 4.2
Short description of error
When sculpting on multiple meshes, using Alt-Q to switch between them, Undoing changes that switches to the previous mesh will cause Redo to stop working on the last Mesh. It doesn't matter if it's only 2 or more meshes, it's only the last mesh that you can't Redo.
Exact steps for others to reproduce the error
LLM Reasoning
Got it, let's analyze these two bug reports. First, look at the key sections: Description and Steps to Reproduce.
Bug Report 1 is about Transfer Mode in Weight Paint mode. The issue is that after transferring once, subsequent transfers fail with an error. Steps involve using Alt+Q (Transfer Mode) between objects in Weight Paint, and it only works once.
Bug Report 2 is about Sculpt Redo broken when using transfer mode (Alt-Q). The problem is that undoing changes between meshes makes redo not work on the last mesh. Steps are adding multiple meshes, sculpting, switching with Alt-Q, undoing back to first, then redo fails on last mesh.
Now, check if they're the same issue. Bug 1 is about Weight Paint Transfer Mode failing after one use (error message). Bug 2 is about Sculpt mode's Redo breaking when using transfer mode between meshes. The modes are different (Weight Paint vs Sculpt), and the symptoms are different (transfer failure vs redo failure). So they're not the same issue. Therefore, the answer is No.
JSON Data
{
"llm_judgement": false,
"processing_time": 14.013344000000002,
"duplicate_report_number": "130420"
}
Report flagged as NOT a duplicate by LLM
Weight Paint+Armature modifier, Brush Falloff Reverts to 'Projected' After Switching Objects
https://projects.blender.org/blender/blender/issues/152556
System Information
Operating system: Windows-10-10.0.26100-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 4070 Ti SUPER/PCIe/SSE2 NVIDIA Corporation 4.6.0 NVIDIA 580.97 Opengl Backend
Blender Version
Broken: version: 5.0.1, branch: blender-v5.0-release, commit date: 2025-12-15 16:36, hash:
a3db93c5b259Short description of error
In Weight Paint Mode if the geometry has an Armature Modifier, the Brush Falloff setting reverts to "Projected" if the user leaves Weight Paint Mode, selects a different object, and then returns to Weight Paint Mode (either on the original or the new object). This behavior is inconsistent, as other user-assigned brush settings persist correctly.
Exact steps for others to reproduce the error
Thank you!
LLM Reasoning
Got it, let's analyze these two bug reports. First, look at the descriptions and steps.
Bug report 1 is about Transfer Mode (alt+Q) failing when switching between objects in Weight Paint mode—only works once, then gives an error. The issue is with transferring weight paint mode between objects, specifically after the first switch.
Bug report 2 is about Brush Falloff reverting to "Projected" when switching objects in Weight Paint mode. The steps involve changing brush settings, switching objects, and seeing the setting revert.
The key here is that the issues are different: one is about Transfer Mode functionality (switching between objects for weight paint transfer), the other is about brush settings (Brush Falloff) reverting when switching objects. So they're not the same issue. Therefore, the answer is No.
JSON Data
{
"llm_judgement": false,
"processing_time": 12.354586999999999,
"duplicate_report_number": "152556"
}