I got a bug, I guess, during the base defense mission.
I was about to be overwhelmed by the aliens, but I still got 3 soldiers, one wounded. They were in cover and not in the line of sight of each other, so even if some frame was skipped at least one had to survive. Instead at the beginning of my round I was thrown back to the geoscape, and able to transfer all the items (and all the soldiers as well!!) to another base.
The lost base was still there but no misson popup was shown on the top left of the screen; it was there but unable to produce, research or else. The only 3 active sections of the base were buildings, transfer and base summary. After one hour of game-time finally the base was destroyed, but to my surprise after some time the entire stuff and crew was transferred (I tried so save whatever I could), including the soldiers who died during the battle... !
After a while an UFO was detected, but not shown on the geoscape.
I'm attaching the ufoconsole. I also tried to save, and despite it seemed that the save was ok, I couldn't find it amongst the others. I'll double check later today to be sure I didn't miss it.
I'm using the 2.5 DEV downloaded on the 30th of October (so I think it's not the last version).
By the way: for a while now I'm not able to see reaction fire (and my subsequent shoots) from aliens having using weapons more evoluted than the plasma cannon. The effects are still in place, as I had casualties and I killed some aliens as well in this phase, but I'm unable to view the shooting.