When multiple values are changed at the same time, the acitity log contains a list of values added and removed. An example of this is when multiple dependencies are added or removed at the same time. A query cannot find a bug on which a certain dependency has been removed unless the dependency was removed all by itself. The boolean query needs to have an "added" and "removed" in addition to the "changed from" and "changed to" in order to find fields on the added and removed lists.
Yeah, and there are issues with "contains" vs "is" for multiple entries. Theres a bug on that somewhere, too.
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