Day as usual with Windows modern apps, calculator won't start, gets stuck in here:

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It probably starts working if I restart, or kill some random modern processes (this fixes so many problems, my start menu if it gets stuck, starts working if I kill some modern processes in randomly), but this is really really frustrating.

I personally suspect these modern app problems are to do with C# exception handling, it does not enforce (by design) to catch all exceptions and it has lead to deteriorating of C# apps, some programs are generous to show us the exception but modern apps isn't showing those.

Edit I killed a "Search" process and calculator began to work.