OsmInEdit allows empty value
Summary
https://www.openstreetmap.org/node/6191849857/history : version #5 (closed) of this object adds an empty value for key door.
Steps to reproduce
I don't know, I'm not the one who created that changeset.
What is the current bug behavior?
OsmInEdit created and uploaded an empty value.
What is the expected correct behavior?
OsmInEdit shouldn't allow uploading an empty value