Filter using another dataset not working.

Filtering a repeater using dropdown works, but when I filter using another dataset with the same values as the dropdown had, the repeater content doesn’t show up at all.

The primary dataset that the repeater is reading from contains a column with a combination of these values in each row - “AAS, CCD, AAA”

The filter is set up to read from a dataset that contains either “AAS” “CCD” or “AAA” and the rule is set to “contains”.