backend: Sometimes i get "Connection lost" after login

Bug

Sometimes after i enter my credentials and i log in i get the "Connection lost" overlay. I think the pattern is something like this:

i the frontend opened in browser showing the dashboard (main screen). I think this is important because on dashboard screen frontend continuously issues queries to backend.
interrupt the connection, remove the cookies - i.e. usually i am stopping the server
after a while i am starting the server
when i am looking at the browser tab I see i am on login screen (not sure how i got there)
i am entering the credentials and then i log in
frontend shows the dashboard screen but on top of that the "Connection lost" overlay is shown.

It happens to me several times, but not very often. I am opening this task to gather more infos from everyone and to keep an eye on this issue.

metasfresh / metasfresh-webui-api-legacy