Here is what happened to me lately multiple times, at least 4 times I can specifically remember.
While playing multiple tables (3-4), when the PokerStars client lost focus (because I was using a browser at the same time), when clicking on a table where it is my turn to act it does weird things. E.g. one time I folded KK even though I didn't click exactly on the fold button but instead in the middle of the table. Another time I min-raised when I clicked on the "Fold" button. The first few times I thought it must have been my own fault. But the last time it happened I paid attention and kept the mouse exactly where it was, and it was clearly not in the spot of the "Raise" button but exactly over the spot where the "Fold" button is located. This is really weird. It hadn't happened once ever in the 50k hands I had played so far on PokerStars. Only happened recently after the latest update. (And as mentioned above at least 4 times)
Below there is an example. I would never min-raise in this situation. This is not a proof of course. One time I lost quite some BBs after I min-3bette unintentionally and hit top pair. Obviously folding KK is awful, too. I am using the same hardware and mouse. Not using the touchpad. This is not cool at all. Gonna raise an issue via the PokerStars support. But still, I want to make you aware, and I am wondering if people have experienced the same thing?
PokerStars - $0.02 NL (6 max) - Holdem - 6 players
Hand converted by PokerTracker 4
SB: 99 BB
BB: 68 BB
UTG: 109 BB
MP: 101 BB
CO: 68 BB
Hero (BTN): 104 BB
SB posts SB 0.5 BB, BB posts BB 1 BB
Pre Flop: (pot: 1.5 BB) Hero has 4♥ 2♥
fold, fold, CO calls 1 BB, Hero raises to 2 BB, fold, BB calls 1 BB, CO calls 1 BB
Flop: (6.5 BB, 3 players) 9♦ 9♠ 8♣
BB checks, CO bets 3.5 BB, fold, fold,
