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  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.