SUMMARY
Ctrl+W should close Kate window if only one file is open. This is how Dolphin behaves, and I like this behavior.

I understand there may be users whose workflow is to
 1. work on a document
 2. close it
 3. expect a new fresh Untitled document to show up and start writing something new it.
To account for this workflow, we may want to consider only closing the Kate window if
 A. The users presses Ctrl+W twice in a row (assuming Kate only has 1 document open prior to the first Ctrl+W press)
 B. The currently open document is an empty Untitled document (this is mostly the same as option A, except for possibly some edge cases like pressing Ctrl+W immediately upon starting Kate.)

STEPS TO REPRODUCE
1. 
2. 
3. 

OBSERVED RESULT


EXPECTED RESULT


SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION