I have been running kstars 3.5.2 quite happily on my RPi4 running Rasbian 10 (Buster)
I tried doing a fresh compile of the latest source tarball of 3.5.3 yesterday which compiles fine but then I realised that Ekos has completely disappeared from the menu bar. Then I came here and saw this thread.
Is there a fix available or should I go back to 3.5.2 ?