So... I went to record it failing on my machine and it worked fine! So good job on fixing it that quick<\irony>
Maybe what happened is: I tend to leave affinity open for days with multiple open files. I hadn't closed affinity for several days of work when I saw the failure; but, I did close it last night.
But then I went to record the screen when it worked, and now it doesn't work. This is the recording; unfortunately it does not show the unsuccessful clicks; but they are when the cursor pause over a file; going down screen where command clicks, upscreen was shift clicks
Looks like you did a thorough job of trying to recreate the issue, even to the point of using the same file names.
Screen Recording 2024-03-28 at 10.52.09 AM.mov