How do I unstick a sticky field?

Greetings all.
I created some sticky fields when I created a new note type, but now I can’t figure out how to unstick them when I am adding new notes to an existing deck. F9 doesn’t do anything; neither does clicking on the pushpin. What am I missing?
I’m using 2.1.49.

Maybe caused by an add-on: When problems occur - Frequently Asked Questions


Ok. Seem to be Multi-column Note Editor (3491767031) that is breaking sticky fields.
Once removed, no problem.
Thanks for you help.