MP2 generates flow of low battery alerts and clears, every 30 seconds

Today my installation acts weird and created a flow of notifications that made vrm suspend my alarm notifications.

This morning the battery reached 10% which I set as minimum SOC yesterday. I would expect as normal one notification alert and later in the day another cleared notification. Instead my system decided to clear every 30 seconds and create another low battery alarm notification. Weird behavior. I do not think I changed a setting, not knowingly at least. In advanced tab two graphs that are normally identical now show a difference just after discharging stopped because of reaching the 10% limit. One graph is system and shows switching or something, but Victron was quiet as normal. The other graph, 5kWh, shows the same battery voltage but without disturbance.
What was happening here ?