I had the same issue after upgrading to 1.0.5
The sse fix proposed on Permanent "Connection lost" error for n8n next did the trick for me, as I am running Docker with Apache’s reverse proxy.
@MutedJam do you foresee a future issue with not using the default websocket setting from now on?
PS: Looking for “Connection Lost” on this forum top search field only shows results older than 1 year, unless you click “More”. So I was about to create yet another duplicate post for this question … 