Linux Vapoursynth problems

[Selur]

Some UI elements (typically the bold headers on almost all tabs) look displaced on a 4k screen. Is this known/relevant/important enough

Have you tried using another theme?

renice: failed to set priority for 9057 (process ID): Permission denied

This happens in case the Hybrid used is not allowed to adjust the priority of the current thread.
I doubt it is related to the problem, but I'll compile a dev linux version for you to test, just to be sure.
no clue what's causing the:

malloc_consolidate(): invalid chunk size
Aborted (core dumped)

Cu Selur