Host Out of Memory - reproducible at Dashboard edit since 2024.8

Hello community,
I am facing since 2024.8 an issue with my HA running on Proxmox:

Once I edit and save a dashboard page the system frontend is getting disconnected and I can see an Our of Memory message at host:

The HA instance has 4GB memory and 2 Cores assigned. Also in System monitor I cannot see that system is running our of memory, max 60% is used.

Log files home-assistant.log.1 / home-assistant.log don’t show any obvious issue.

Any idea how I can identify a potenital source component/card/addon being responsible for that issue?

Any advise is appreciated!
Thx, Bastian