All menu items often become ineffective

[Davider]

All filter-functions like FFC_NP_Editor is no longer working. 
I have too many filter functions(menu items), I don't know which filter function the problem started from.
I can't see the logs, can't find the reason. After restarting QM, everything works fine again.

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Is there a way to restart only these filter functions? Because restarting QM will affect the startup speed of many functions that use C# code.