Thanks a lot for testing and reporting back, good to hear it's working fine now!
If you like you can update to later nightlies, we fixed a couple more bugs (and stopped enabling 4kp60 by default as that there's an unresolved issue). See the github commit log for details Commits · LibreELEC/LibreELEC.tv · GitHub - clicking on the linked pull requests in the "merge pull request ..." commits usually contains some more info about the changes.
It's always helpful for us if people test the latest nightly so we get feedback if we accidentally broke something.
But of course it's also OK if you just stay on the build that works for you and wait for the final release.
so long,
Hias