Yes, this is v4.0.1. I’ve been seeing it all along in the 4.x series, but previously only after downloading a map or when the page has been idle for a long time (multiple sleep/wake cycles on my Macbook). Now I’m seeing it much more frequently though, e.g. when closing the job modal etc. Also for me a refresh is approximately 100% reliable. Rarely it takes 2. Will email the logs.