Does this happen to anyone else? I need to keep saving my work, as occasionally my project will suddenly become a blank page, and most of the menu actions won't work. I have to kill it in Task Manager and re-do everything since my last save. I just upgraded to the latest version and am disappointed that this bug still exists.

Yep that's started happening with me too, blooming annoying, (latest version also) I say started bcs it has never happened before, only since last windows update, sometimes also on site designer too. Which is why on site designer I now autosave the settings to every 4 minuets, and manual save as a numeric version number

I shall report this to the support team tomorrow my time (getting late here)