You should re-state all the conditions in this first post. ItNoone wants to dig through threads just to understand the question right.
State the software you use. There is no openhabian 3.0.1
State what’s your default persistence. Is that where you persist to ? Where the charts are generated from ? What is remote about MariaDB ? If that’s where the data is stored, breaking or rebooting your local openhabian box won’t affect persistence charts so I suspect this is not used at all so it’s possibly misleading information.