The arrow keys work for me (OS X) in explore mode, with an image selected, and in open/edit mode.
Possible, but on my Windows 10 system it is not working
Edit:
I don't know why, but now it is also working on my Widows 10 system.
I will come back if it fails again.
Edited by: AndreWolff on 20 Dec 2021, 20:53