**System Information**
Operating system: Windows-10-10.0.18363-SP0 64 Bits
Graphics card: GeForce GTX 1080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 456.71
**Blender Version**
Broken: version: 3.1.0 Alpha, branch: master, commit date: 2021-10-27 16:56, hash: `rB39c11c03d0d7`
This is also broken in the 3.0 Alpha!
Worked: (newest version of Blender that worked as expected)
**Short description of error**
The keyframes in an NLA strip start to freak out in Tweak mode, even when just changing the UI such as zooming in or out, but it also sometimes occurs while adding new keyframes, selecting keyframes, renaming the action, etc. Essentially whenever the animation updates.
**Exact steps for others to reproduce the error**
{F11555755}
1. Open the attached file, which is just a default cube with two NLA strips.
2. Enter tweak mode on the second strip
3. Move your mouse around the Action Editor, zoom in and out, select keyframes, or place a new keyframe
{F11555748}