Final update for today – I can reproduce on the fresh install Raspbian Jessie with Pixel, despite my failure to reproduce on an updated older Raspbian that had Cayenne already installed. So I’ll be able to get this to our development team as a bug with the new Raspbian release. Will update as soon as I know more about a fix.
In the meantime, there are lots of remote access solutions for Raspbian that you could use until we have this fixed: Raspberry Pi Documentation - Remote Access explains lots of options, the VNC page on their site shows alternatives that would be very similar to our Remote Access feature.