I just updated to Juno today and everything is running great apart from 2 separate issues.
When I watch videos on google chrome eg. youtube or twitch the video often pauses while the sound continues before starting again when I change from fullscreen.
I have found that with any theme that is not the default wingpanel will not turn black when windows are maximised. I tried the instructions at the below link but the problem wasn't resolved.
Neither of these issues were present for me in Loki.
Thanks in advance for any help you guys are awesome!