A common display bug on android is the radar bug. There is no grid nor distance circles, the radar shows a black background, and nebulae are not displayed. When this bug is present, it affects all stations with a circular radar, so i.e only engineering, relay and derived stations are fully playable. I am not sure how common this bug is, it is surprisingly rarely mentioned when someone is talking about android, and daid said once on his deviced everything is displayed fine - but it was present on every device I was able to test it on so far.

The obvious difference between relay and the other stations is, that the others are circular, so I changed one to rectangular mode, and suddenly it works:

Looking a bit into the code, it seems that the rendertexture does not work correctly. Instead of using black to cut out a circle, the blend mode seems to be ignored, drawing just a black disc on top of other elements.

I have no idea how to fix that (if possible), and as I currently don't have a virtual android setup on my pc, testing is kinda tedious.
A quick workaround would be to add an options.ini switch to change all radars to rectangular. Not a pretty option, but could be beautified a bit, e.g. by changing the background or drawing a rectangular line around the radar. Also, the officer would be able to see a bit more than usual, but I don't think that is a big deal and could be mitigated by letting that option only affect android.

Thoughts?