Posting here for anyone experiencing this - I’ve reported to Bubble and you should too if it affects you. It affects one of our live applications and broke a key functionality.
Search for A : merged with Search for B : minus list (empty list) appears to remove Search for B from the data source. This is the behaviour I’ve isolated in a Repeating Group. When :minus list with an empty list is used (by referencing another RG with empty data source), it also removes all of the Search for B data, when it should remove nothing, as the list to minus is empty. Removing the :minus list part of the expression fixes it.
