Opinions on whether colour swatch save_as behaviour is a bug

I posted this as a part of a Godot feature proposal:

There is a save_as option in the swatches menu. This is disabled until you have saved a swatch (.tres) file. However the clear menu option resets that to disabled. The problem is if you have saved a set of swatches and then clear the dock to start a new set, the save_as menu option is now disabled so the user is left wondering “is pressing save going to overwrite the already saved swatch?”. (Note that the save button works as a save-as at this point however) this is not the way save-as works in any standard menu. The save-as option should be always available and the save option should overwrite the current file.

I am considering posting this as a bug instead. I feel that this non-standard behaviour is bug worthy.
Any thoughts?

Sounds like a minor bug, but a bug all the same.