This is for Android TV homepage only.
If you have nothing in your Continue Watching Hub and watch anything. The Continue Watching Hub will not update on the Home screen until you stop / restart the program. Then It will show up.
This only happens when the Continue Watching hub is completely empty from the start. Meaning you have nothing to resume watching.
If a video is already in the Hub it will update properly with the second video. It’s only when it’s empty.
Easy to reproduce this.
Make sure you have an empty continue watching hub. Stop and restart the plex app or reboot your device ( this is important step ).
Open any video fast forward a few to the point where it will resume. Check the Home page on the Android TV. You shouldn’t see the hub.
Have to force close the app and restart it for it to appear.