I guess there are a couple things this could refer to - * On desktop Windows in desktop mode, modern apps are suspended when they're minimized or the user swit

I guess there are a couple things this could refer to - * On desktop Windows in desktop mode, modern apps are suspended when they're minimized or the user switches away from the virtual desktop they're on. Background operations that need to meant to continue are supposed to use various officially supported background task APIs. This is intended to be transparent to the user. * AIUI in situations where the OS detects an app is hung and would put up a ghost window with a "not responding" message if it were a classic app, the OS will just straight up kill a modern app. The theory is that this will force developers to make more responsive apps. So AFAIK there are no situations where a "well-behaved" app is supposed to spontaneously close from the user's POV, but for modern apps the OS is stricter about trying to enforce "good behavior". TBH though I think what the GP was seeing was probably just Edge crashing on its own.