Thanks!!! Will this be ported to 2.83 as well? It seems to be a pretty straightforward and non code breaking patch.
Jun 25 2020
Jun 24 2020
Jun 23 2020
Could you run the debug argument with 2.90.0, there should be a stack trace attached to that.
I suspect some openGL issue here not necessarily linked to VSE exclusively.
Can you run Blender from command line with -d argument? I gues it would be blender -d and paste here console output? I am not sure if it will contain stack trace in Linux, if not there will be crash.txt file mentioned in the end please upload that as well.
Jun 22 2020
Note: On Windows, tested both this 391.35 driver and 369.09 driver and both crashed.
Can you update your GPU driver and check if this resolves the problem?
Please add Operating System info