I think it's a limitation of the new way we handle filter parameters. We don't actually store it.
Do have some chance to store it?
I think this should solve the problem:
https://github.com/traccar/traccar-web/commit/abf0eb0958292bbb023f9ec267c02dc3bfabb570
Good, Anton is a machine!
Traccar 6.12.1
When we change period, it doesn't persist to user when we need to change device.
check video