Date Last Matched Change?

Before 2.1, the following rules worked great whenever new files were added to a folder:
Kind is Music
Date Last Modified is after Date Last Matched
Do something...
Starting with 2.1 (and still with 2.1.1) these rules result in a no op. I've tried changing Date Last Modified to Date Added, still no luck. If I change the rule to:
Date Last Matched is blank
It works. As it happens in this case, this should be a sufficient workaround for me. However, I could see other cases where comparing the last modified date vs the last matched would be important. Did something break here?
Thanks!
Kind is Music
Date Last Modified is after Date Last Matched
Do something...
Starting with 2.1 (and still with 2.1.1) these rules result in a no op. I've tried changing Date Last Modified to Date Added, still no luck. If I change the rule to:
Date Last Matched is blank
It works. As it happens in this case, this should be a sufficient workaround for me. However, I could see other cases where comparing the last modified date vs the last matched would be important. Did something break here?
Thanks!