Okay, so I have had this issue multiple times, and I'm not sure there's a fix unless the bug is resolved. The task bar with " file, edit, etc." gets stuck, and you cannot access it.
Launch BETA Photoshop While Pressing The Keyboard Shortcut With Photoshop closed, press and hold Shift+Ctrl+Alt (Win) / Shift+Command+Option (Mac) on your keyboard and then Launch Photoshop the way you normally would. https://helpx.adobe.com/photoshop/using/preferences.html#Manually