D+ rules have changed since last AV update

Wasn’t sure if this board or D+ is where this should go:

Since the last AV signature update, my D+ rules have changed. What was trusted and allowed became custom or non-existant. I have had to manually re-enter the rules for my software to function properly.
This was discovered this morning when several games and applications no longer worked and instead alert popups were being displayed. DB version 1008.

Question: The errors currently being experienced by other users concerning D+ and their AV software. Could the cause actually be the AV module (with heuristics) causing issues with D+, which in turn is causing issues with other AV software?