Since I bought my new 16" macbook pro I've had this problem with photoshop.
All the the warning dialog boxes don't come to the front and thus, the interface of photoshop is unusable. This has been the case from the beginning on a brand new install.
Using expose to reveal all windows doesn't show the dialog box either, in fact the only way to get the warning dialog come to the front is to alt-click on the photoshop app icon.
This happens with every single warning inside photoshop. I cannot find a solution.
In the attached video you can see what happens when I cause photoshop to present me with a warning about the clipboard being too big.