after switching to KDE5 some shortcuts are unconfigurable (I can't see them in a list). For example for creating a new tab
Yes, you are correct.
It seems I have created dublicate of https://bugs.kde.org/show_bug.cgi?id=337883
Build from sources Qt: 5.4.1 KDE Frameworks: 5.11.0 Konsole: 3.91.0 and Kubuntu 15.04 Qt: 5.4.1 KDE Frameworks: 5.9.0 Konsole: 15.04.0 both have e.g. shortcut "Ctrl+Shift+T" for creating a new tab
what all shortcuts are missing? Would love to fix on that :).
This is resolved at least in Konsole 16.12.1