I can confirm that the exact steps you told me (selecting 2 pictures, without use Places in Move option, and enter in one random folder), don’t work.
Gwenview 26.04.3
Operating System: openSUSE Tumbleweed 20260702
KDE Plasma Version: 6.7.2
KDE Frameworks Version: 6.27.0
Qt Version: 6.11.1
Kernel Version: 7.1.2-1-default (64-bit)
Graphics Platform: Wayland
Processors: 14 × Intel® Core™ Ultra 5 245K
Memory: 32 GiB of RAM (30.9 GiB usable)
Graphics Processor: NVIDIA GeForce RTX 5070
Regards
EDIT: The same process but selecting only 1 picture works. Is with 2 or more pictures that don’t work.