SUMMARY
Nowadays many applications with tab support has an option to activate specific tab with shortcut. There, "Alt" + Number key activates tab by its order number on the panel. For example, Alt+1 activates 1st tab, Alt+5 activates 5th tab etc.
Some application use their last Alt+Number shortcut to activate the last tab (for browsers it's Alt+9, for KDE Dolphin it's Alt+0, Konsole also has such action but shortcut is not set by default).


STEPS TO REPRODUCE
1. Open several tabs
2. Use Alt+2 to activate the 2nd tab

OBSERVED RESULT
Nothing happens

EXPECTED RESULT
Alt+2 activates the 2nd tab

SOFTWARE/OS VERSIONS
Linux/KDE Plasma:  Fedora Kinoite 40
KDE Frameworks Version: 5.249.0
Qt Version: 6.6.1

ADDITIONAL INFORMATION
AFAIK, Alt+[2-9] shortcuts are currently not used but Alt+1 is already set for "Search" in the "kateproject". I hope that can be changed by default.