2018.4 LTS locking up

Unity LTS latest, Windows 10 - keeps locking up today needing a restart.
Never saw before the latest version
The editor log does not have anything very useful - ends on rebuilding like so:

[    289 MB ]- Packing completed.
[    289 MB ]- Update Sprites and Cleanup.
[    289 MB ]Reloading assemblies for play mode.
Begin MonoManager ReloadAssembly

Any new issues?

This is happening again & again -
Reloading assemblies after finishing script compilation.
Begin MonoManager ReloadAssembly

‘Lock up’

Locked up after building to webgl, after killing and reloading project it had weird editor issues and required complete asset re-import.
Has 2018 LTS not gained any windows bugs?
Any known conflicts?

Still happening, really annoying, maybe VS has something to do with it.
Bug case #1269817
2019 is not immune either