"Plex - Present in Amount of Other Collections" Rule Does Not Work As Expected

[mr1-000]

Hello,

I have configured one of my maintainerr collections to only add items that are present in less than 1 other collection. However, every item that I test returns that it is in 0 colections. Have I configured this incorrectly?

As an example, you can see here Do The Right Thing is in a Smart Collection - Directed by Spike Lee. The rule should find that it is in 1 collection and therefore not include it. But when I test it, Maintainerr returns that Do The Right Thing is in 0 collections.

Thank you for your help.