Pgup/Pgdn while editing a filename discards

[Thany]

Rename a file inline. How: It's F2 for me, as it should be. Not sure if that's made the default yet, but otherwise just click a file twice.
Now change it to anything else. Don't hit enter yet! Stay in editing mode.
Now press Pgup or Pgdn.

Result: your edit will be silently discarded.

Expected: Either Pgup/Pgdn do nothing, or they goes to the beginning/end of the filename, or they commit the file rename like the Up/Down keys do. I don't really care much for the exact solution, as long as an edit is never silently discarded.

Why: when using the Home/End keys a lot to get to the start/end of a filename, the Pgup/Pgdn keys are easily pressed by accident. This is especially not cool when editing a particularly long filename.

Tested on TC 9.22a on Windows 10.

[Usher]

None edit will be saved if the filename may go out of sight. It's been already discussed for mousewheel case:
In-place rename cancelled by mousewheel

[ghisler(Author)]

Currently there are no plans to change this behaviour, sorry.