I was planting some droids on a map using the editor, but they were not shown.

I already assumed a bug, but than I noticed that was hiding enemies via  toggle
enemies display  button. :)

To prevent this from happening to more users, I think we should automatically
show droids when we enter enemie selection mode.

What do you think?

Can you not place obstacles while in "no show obstacles" mode?

Sure I can, this is the problem.