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Timeline lines change thickness
Closed, ResolvedPublicBUG

Description

System Information:
Operating system: Linux-5.4.0-7634-generic-x86_64-with-debian-bullseye-sid 64 Bits
Graphics card: GTX 1050Ti NVIDIA 440.82

Blender Version:
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:

  1. Open a timeline in Blender.
  2. Move the mouse back and forth over the edge of the timeline. Notice how the vertical lines in the timeline keep changing thickness.

Bisecting points to rBbbb2e0614fc3. CC @Jeroen Bakker (jbakker)

Event Timeline

Philipp Oeser (lichtwerk) changed the task status from Needs Triage to Confirmed.Wed, Jun 24, 1:06 PM
Philipp Oeser (lichtwerk) changed the subtype of this task from "Report" to "Bug".

I was poking around in that area for other reasons and see the cause of this issue. Will submit patch tonight probably.