If you saved the config in the option menu it might be using vulkan now which would explain it. If not maybe the desktop file is messing up with 0 A.D. but that'd be strange, could be a KDE plasma bug might be nice to report it upstream. Does the command which 0ad point to something else ? The underlying executable is called "pyrogenesis"

The funny thing about forums is that they keep a written record of every user’s actions.  The sad part is that you post at more than 13x the rate of the people you mock for posting too much. 

Don't try to change their minds. Is a waste of time.

Here come those who always give their opinions.

+1 Can be beneficial if you repair one siege and the other is damaged too, but if storehouses get repaired it's waste of time. But having one or two units in this repair mode would be kind of nice in general. But if it matters to you setting the repair in queue is also not too much apm intensive.