The main bug I have encountered so far is related to the save game/load game.
Most games appear to be saved ok, but after I load a couple of times, the game hangs. Sometimes the game already hangs on loading the first time. I have the issues with loading tactical missions, not with loading geoscape saves. I have a MacBook Pro.
Other minor bugs I encountered:
I had a mission where I killed all enemies and I kept walking around looking for other enemies, but the game won’t end and no enemies to be found.
Once I had an ambush mission that I tried but then wanted to abort because my squad was injured and the enemies to strong. I reloaded the geoscape save where I was preparing to start the mission and after loading I got the message that my soldiers resisted the attack (or however it was formulated). I won the mission and materials without putting up a fight.
I think I found a work-around for the “game not saving” issue. If I’m in “geoscape” and can’t save, entering a fight has so far always allowed me to save and vice-versa.
Just flying around and doing other stuff in “management mode” doesn’t seem to clear the save bug, but entering a fight does.
Same issue here. I quit the game in the first round of a mission (forgot to load a weapon to a guy - would be nice to get warning if sending unarmed soldier to combat). When I click continue (or load the one and only save I have) it opens on this same weird view of the geoscape and stays there forever.