Memory leak in browser?

[RasmusThorsager]

I'm experiencing a leak in memory usage, when showing ex. time series dashboards on our monitor screen, but only when Zabbix is the datasource.
it keeps eating up more memory every time the dashboards refreshes. (from ~800MB to ~6GB in a couple of hours)

I'm using Firefox, but have also tried with Chrome and Edge, same problem.

The problem started 1-2 months ago.

The Grafana and Zabbix plugin is running in Docker, and it is fully updated.