Thank you, @Licat, for the reply!!! 
I’m going to add a link to a short video. Screenshots can’t capture the issue properly.
Herewith is a link to a video recording the issue.
I was trying to open the command palette using a hotkey in the video, but it didn’t work.
By default, the iPad displays an “undo redo paste” bar at the bottom of the screen. I thought that the “undo redo paste” bar was preventing the display of the command palette bar. So, I disabled the “undo redo paste” bar, as I have previously mentioned, but it didn’t solve the problem.
The video was recorded with that “undo redo paste” bar disabled, and the command palette didn’t open.
I still can’t access the command palette.
I have tried to change the hotkey, as well, but it didn’t work either.
I hope you can solve that problem.
Thank you for taking the time to analyze the issue.