Created attachment 61611 [details] patch to make kate reuse currently open session (if any), instead of open new editor window each time. If kate selected as editor make it reuse already running kate instance, to prevent opening many windows - kate's internal tree of open files is much more comfortable to use.
Report and patch from Hai Zaar <haizaar@haizaar.com>
Hello! Sorry to be the bearer of bad news, but this project has been unmaintained for many years so I am closing this bug.