I entered some quanities (figuring out how to use a new property) and I initially added a unit. Then I decided / realized it probably shouldn't have a unit and wanted to remove it.

I deleted the text in the unit input box and clicked save.

after "saving", it still displays the unit and not sure anything changed or what changed. (i think the precision [1] which is not what i wanted) when I reload, it still has the unit.

(now i can change the precision back to 0 and remove the unit and the change is recognized, i suppose because it recognizes the change in precision)

also, just deleting the text is a bit awkard way of removing the unit.

[1] https://www.wikidata.org/w/index.php?title=Q32610&type=revision&diff=301097946&oldid=301097898