I’ve just updated to 4.18.1 which has actually resolved the problem completely… I don’t know what was causing it in 4.18.0 but now everything seems to be working fine in 4.18.1. Note: I have also gotten rid of the “Category” specifier, and it even works without that. I guess there was a bug in 4.18.0 that might have been fixed indirectly by something seemingly unrelated, as I haven’t seen a fix targeted specifically for this. Thanks again for your time!