In https://phabricator.kde.org/R237:d85a57645f94d2d087711d7c608a0c5a46ed7ede, we changed the standard tab changing keyboard shortcuts to ctrl+pgup/pgdn.
This creates a conflict in Kate, which currently uses ctrl+pgup for "Move to Top of View and ctrl+pgdn for "Move to Bottom of View".
Oops, I didn't expect this to happen.
I assume the Kate developers want to keep the current meaning for Ctrl+PgUp/Ctrl+PgDown? In that case I can suggest this fix:
My preference would be to keep the shortcut so it can remain consistent across apps (consistency is important!), but we should ask Kate developers their preference.
*** Bug 390388 has been marked as a duplicate of this bug. ***
Fixed with https://cgit.kde.org/ktexteditor.git/commit/?id=9f2ffd36c5873f4d2645f07129ead7970871808c