System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: GeForce GTX 1060 6GB/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 445.75
Blender Version
Broken: version: 2.91.2, branch: master, commit date: 2021-01-19 16:15, hash: rB5be9ef417703
Worked: (newest version of Blender that worked as expected) not sure, 2.8x?
Short description of error
[Please fill out a short description of the error here]
I got an object with its origin on X = 0. Somehow, I don't know why, it randomly starts bugging and snapping verticies to its X = current position to mirrored position. I have NO mirror modifier for this mesh object. I observed it acting up on several mesh objects so far and I am really annoyed. I cannot 3D model like this anymore. See my gyzao gif for more details:
https://gyazo.com/a3c419e84734488c60980459e0ec262a
Exact steps for others to reproduce the error
[Please describe the exact steps needed to reproduce the issue]
I have really no idea. Copy verticies out of an object that got X = 0 origin, have them not have a verticy conneted to the origin? And then extrude, subdivide and see it all mess up at some point, edges clipping into each other and a weird copy of the incomplete original being snapped to the other side, those verticies missing on the original. Also note that the drag option shows a weird red line I cannot deactivate.
[Based on the attached .blend file]
