I had a similar experience to Montblanc.
I set up Control-J to switch to the pane below.
I set up Control-K to switch to the pane above.
(I wanted Vim-like keys for switching panes quickly.)
There’s was no hotkey set up for Control-K. However, there seems to be an unlisted keyboard shortcut for Control-K that deletes a line. Surprisingly, both the hidden and the custom-added keyboard shortcut are run when I press Control-K.
In line with this feature request: Perhaps it would be easiest to notify the user that there’s also a conflict with any of these unlisted keyboard shortcuts.
Thanks all
Andrew