Thanks, Cobra. I don't know why I suddenly went blind and thought N2715D had said "iPad"--maybe because I was reading his post on my own iPad. Anyway, "Never assume" caught me again.
About those screenshot bug reports that Apple provides (and no doubt hopes beta testers will use because they also go to Apple): I found out the hard way last year that AP was not declining them but wasn't aware they were available and therefore wasn't using them. Then when I finally wised up and mentioned them to AP they started declining the service, which made the screenshot bug report report service unavailable to me and other iFly beta testers. Finally--I hope it's final!--after the first incarnation of EFB failed, AP started NOT declining the screenshot bug report service and I hope started actually looking at them. I may not have that story quite right in the details about AP; but the essence is that when an iOS or iPadOS beta tester taps "Done" after making a screenshot, Apple will query whether the tester wishes to submit it as a bug report. I think that query only happens if the developer has allowed it. But I still don't know whether AP actually USES screenshot bug reports, or not. So now I usually copy whatever I write in a report and keep it in a log, along with copies of my internal iFly bug reports.
And I'd recommend that all beta testers keep copies of their reports.