Hi, I've been having this bug where randomly all pop up windows stop appearing. For example after I do a save as and choose a location, the next dialog box with my compatibility settings doesn't appear. Photoshop acts as if it is visiable so I either have to press ESC or Return though I have no visible pop up box to adjust. Please help. Usually I get it to work again after restarting the computer but I've done that twice now and no luck. Using photoshop 22.4 on Mac Pro tower running Catalina 10.15.7
Are you expecting that window that came up, asking if you wanted to make the file compatible (keep a flattened version within the file)? That's turned off as a preference, now. You can turn it back on at Photoshop>Preferences>File Handling and set Maximize PSD and PSB File Compatiblity to Ask, instead of Always.