After pressing “Accept” (where the speedrun starts), an error message appeared, as shown in the video. While the message was on screen, my phone’s system buttons (Home, Back, and Overview) were visible. After pressing “Cancel”, the buttons disappeared, as shown in the video.

I did not use the Back button at any point during the speedrun. This run was completed fully under the Glitchless% (No Tutorial Skip) rules.

I also tried to fix the error message, but was unable to do so.