Some bug with stack 4. For some reason the "red 2" card automatically moved up despite it was lowest card in the stack (undo button shown the animation how it goes back, but then it again automatically goes to the top, so in fact nothing is "undone")
https://ibb.co/f19xyv1
I ended up in this unwinnable situation:
https://ibb.co/4d8pphV
PS: the bug happened only once, the game is amazing (I didn't think a solitaire game could be so interesting to me)