Local graph stops showing nodes after a while

I have a local graph in the side bar. At first it does show the graph, also if I change notes.
After a while the window it empty. Only when I restart my vault it shows again. This is not a workable situation.

Example

Things I have tried

I googled and searched in this forum but I couldn’t find anything how to resolve it.

Could you share your debug information? Help and support - Obsidian Help