How can you tell? “Did not do what I expect” is not the same as “didn’t do anything”. A common investigative approach is to put a logInfo() at the head of your rule script section, to confirm triggering. You can also use to log out key info, like an important Item state.
What type is your Item? Can you show us what you tried to define?
I doubt it, but bear in mind we have not yet seen the failing rule.
EDIT - I have a feeling the following is still true, meaning that a simple “but only if” condition still does not work with quantity state (with units)
The workaround is to script the condition instead - but you don’t care about that, because you don’t want the condition at all here.
MORE EDIT - looks like this will not be made to work (simple comparison with quantities) but clearer warnings will be given
Again, this does not affect you if you don’t want any condition.