Operating system: Linux-5.4.0-7634-generic-x86_64-with-debian-bullseye-sid 64 Bits
Graphics card: GTX 1050Ti NVIDIA 440.82
Broken: version: 2.90.0 rB49234c15e299 (2020-06-23 21:54)
Worked: 2.90.0 rBfdfe85c616d2 (2020-06-22 15:41)
Short description of error:
The vertical lines in the timeline flicker as you move your mouse over the edge of the timeline window as can be seen in this video:
Exact steps for others to reproduce the error:
- Open a timeline in Blender.
- Move the mouse back and forth over the edge of the timeline. Notice how the vertical lines in the timeline keep changing thickness.