acr table froze on river and hand auto folded me with top two pair

Table froze right when the river hit and I was sitting there with top two pair, pretty much counting the chips already. After a few seconds everything unfroze, but my hand was already folded. No time out warning or anything, it just kicked me out of the pot and someone else raked it in. Never had that happen before, and now I'm wondering if I missed something obvious or if it's just a random tech glitch. My connection seemed fine for everything else and chat kept rolling in the background.

Anyone else run into this and figure out what the cause was? I don't want to end up passing on a monster again just because of a system freeze.