Popup window invisible PS 23.1.1, Mac M1 Max

When I try to flatten layer, or content aware fill, by default there is a pop up window (confirmation for flatten, and guide for using healing brush tool)

However, when I try to flatten the image, the photoshop window freezes. I am not able to drag the PS window, and when i click on anything there is the error beep. There is no pop-up window. But when I press ESC, the should-have pop-up window flashes, and disappears. It seems the pop-up window, dispite invisible, is still active. because when I press enter, the command will proceed, and when I press ESC, it flashes and disappear.