Thank you both, that’s great news (for me!), I thought I was entering a world of pain trying to work out why my app was misbehaving.
I’ll continue to use brave and try a couple of things when it next happens. It appears to only happen when something updates on the server - once in production after I pushed a new release, and a couple of times in dev when the code reloader kicked in. It seems to right itself after about an hour for no reason (yesterday I gave up trying stuff, then came back after 20 mins, and it was all good).
I’ll fire up wireshark next time and see if i can see anything on the wire.
