Windowed Mode Bug

am having an issue with maximizing my windowed mode on hearthstone after this last patch
every time i try to max it it get back to normal windowed mode . i tried everything nothing work .
btw i have the battlenet and this game for years now ,
nothing like this happen before

This is still an issue and after a quick Google search, I have seen posts on these forums year after year about dual monitors and moving Hearthstone as a windowed screen, it snaps back to main screen and doesn’t full screen on the second monitor. Why is this not in the list of active bugs posted 18 days ago? If its still an issue after several years?