Was running 0.83 upgrading to 0.84.x the cards for introduction, ecobee weather, ring last image, rokus (4 of them) and plex media players disappeared. Not using Lovelace UI. Using default states UI. These all appear in the states UI as a result of discovery not added manually.
Verified by restoring 0.83 to another sd card. Booted up hassio on this other sd card. The cards mentioned previously were showing in the UI. Upgraded to 0.84.5 on this second SD card and the previously mentioned cards are gone from the UI.
Another observation. One roku media player (out of the 4 on the network) card will appear will sitting on the states UI page. Click away from the states UI and click back on it and the one roku media player card is gone.
Update: It may be an issue with Chrome? Just loaded up the UI in Edge browser and the missing cards are there. Running Chrome Version 71.0.3578.98. Tried clearing out cached data in Chrome cards are still missing.
Anyone else have this issue?