Removing Entry in FileTypes Editor

I have a FileTypes set and I need to delete on the entries. If I put the focus anywhere in the entry the delete menu button never enables.

How do I delete this entry? Is this a known issue?

Never mind. I figured out a way. I added a new entry which enabled the Delete button. Then it was enabled for for the other entries as well.


This is one workaround.
I mostly use UltraEdit to edit the *.xojo_filetypeset file directly.