I encountered a strange bug playing the Linux build where the main play area is vertically flipped. If I drag a component from the bottom menu it appears at the top of the play area and upside-down. As I move my mouse pointer further up the component moves correspondingly further down from the top of the screen. The menus all appear in the correct locations and rendered the right way up, and left-to-right rendering is fine. It's just vertically flipped everything in the main play area.
But if I force use of the vulkan renderer by launching the program with `./Digital-Logic-Sim.x86_64 -force-vulkan` then everything is fine. So I made a launch-with-vulkan.sh script with the two lines below, made it executable, and now I just launch the program with that.
#!/bin/bash ./Digital-Logic-Sim.x86_64 -force-vulkan
Hopefully that helps others :)