Most apps have Help help->report bug -> Launch Bug report Wizard. For KRDC the last step does nothing.
Does it work on other applications? I can confirm on all KDE apps I tried (Dolphin, Ark, Gwenview, Elisa, Okular) so it's probably not KRDC issue.
Also experiencing this on Operating System: Manjaro Linux KDE Plasma Version: 6.2.4 KDE Frameworks Version: 6.8.0 Qt Version: 6.8.1 Kernel Version: 6.6.65-1-MANJARO (64-bit) Graphics Platform: Wayland Processors: 8 × Intel® Core™ i7-4750HQ CPU @ 2.00GHz Memory: 15.5 GiB of RAM Graphics Processor: Mesa Intel® Iris® Pro Graphics P5200 Manufacturer: Notebook Product Name: W740SU
The "Report Bug" dialog seems to be currently broken in most KDE apps. A generic bug report containing a patch already exists, closing this as duplicate. *** This bug has been marked as a duplicate of bug 482240 ***