unbinding default keyboard actions

some of the keyboard actions defined make the program crash.
Is there a way to turn off the default keyboard actions and replace them with my own?

The issue does not name a file, test, or entry point. Start by locating where default keyboard actions are registered and how keyboard callbacks are handled. Done means users can disable the defaults and replace them with custom actions without triggering the reported crashes.

Written by the indexing model from the issue text.