Hi, I found a bug. I don't know what triggers it exactly, but happened to me twice that after a coal speed-up, my fleet got stuck in an ETA 00:00 stage. The green line remained, the fleet never arrived, I couldn't start the battle, and if I moved the screen, the fleet icon moved with it, too, as though two layers that should have been one got separated.
See here: 
This renders my fleet permanently unusable, potentially screwing up my entire universe.
So far, I've been lucky to encounter this in extra universes so that I could just build a new triangulum probe, but if it ever occurs in a primary universe before the gigastructure stage, my entire save will be as good as gone. Hope you can fix this. :)