Fix the single filter manager w.r.t mutexes, disallow changing the filters during an apply, as there is no other solution to do it cleanly
Fix the single filter manager w.r.t mutexes, disallow changing the filters during an apply, as there is no other solution to do it cleanly

ahmedammar/skype_farsight2,ahmedammar/skype_farsight2,ahmedammar/skype_farsight2,ahmedammar/skype_farsight2