It seems that in when file names are too long and don’t have spaces, it “breaks” the interface:
It’s a simple fix; all it needs to be done is rename the file, either make it short or use actual spaces instead of underscores or hyphens, but it can cause confusion for less experienced users and make them think the submission is “stuck” as it covers the decision buttons (not visible in this case as it was a test submission that already had a decision).
Thanks!