Problem solved in 2018.42. App flexibility restored. Nav still might be in background but apps can float over it and be moved as desired.
Do you know that for a fact? When he said point release what did he mean? We are currently on V9.0 2018.39.7
If you use the version format: V<version>.<point> <year>.<week>.<build> <hash>
We are point release 0. It could be a long time before we get to V9.1