Winning check bug?

[python273]

Not sure how that happened 🤔

[hitriy]

Quite common issue when you checking all the mines with flag. And again, it could count game as solved when not all the mines marked/free cells opened

[mrnerdhair]

Possible clue -- I encountered this for the first time after realizing you can double-click a cell to reveal all cells around it if all the mines are already flagged. I've played many, many games before discovering that feature, but the first time I used it I had this happen.