Fix Window UI mouse handling bug
Fix Window UI mouse handling bug

mrjbq7/factor,tgunr/factor,bjourne/factor,littledan/Factor,mrjbq7/factor,nicolas-p/factor,mrjbq7/factor,littledan/Factor,seckar/factor,mcandre/factor,factor/factor,dch/factor,kingcons/factor,sarvex/factor-lang,slavapestov/factor,tgunr/factor,AlexIljin/factor,mecon/factor,ceninan/factor,cataska/factor,tgunr/factor,bjourne/factor,nicolas-p/factor,ceninan/factor,AlexIljin/factor,dch/factor,dch/factor,tgunr/factor,AlexIljin/factor,sarvex/factor-lang,jwmerrill/factor,erg/factor,nicolas-p/factor,Keyholder/factor,erg/factor,bpollack/factor,mecon/factor,factor/factor,Keyholder/factor,AlexIljin/factor,slavapestov/factor,kingcons/factor,ehird/factor,factor/factor,bjourne/factor,erg/factor,sarvex/factor-lang,seckar/factor,kingcons/factor,bpollack/factor,sarvex/factor-lang,slavapestov/factor,sarvex/factor-lang,dch/factor,littledan/Factor,mrjbq7/factor,cataska/factor,sarvex/factor-lang,bpollack/factor,jwmerrill/factor,slavapestov/factor,Keyholder/factor,factor/factor,tgunr/factor,kingcons/factor,ceninan/factor,jwmerrill/factor,mecon/factor,factor/factor,cataska/factor,dch/factor,nicolas-p/factor,slavapestov/factor,sarvex/factor-lang,slavapestov/factor,nicolas-p/factor,bpollack/factor,seckar/factor,factor/factor,cataska/factor,AlexIljin/factor,erg/factor,erg/factor,mcandre/factor,ehird/factor,mcandre/factor,ehird/factor,bjourne/factor,mcandre/factor,bpollack/factor,mecon/factor,bjourne/factor,bjourne/factor,AlexIljin/factor,mcandre/factor,slavapestov/factor,mcandre/factor,ceninan/factor,littledan/Factor,dharmatech/factor,mecon/factor,mcandre/factor,nicolas-p/factor,mecon/factor,dharmatech/factor,nicolas-p/factor,mecon/factor,bpollack/factor,mrjbq7/factor,erg/factor,dharmatech/factor,mrjbq7/factor,dch/factor,erg/factor,AlexIljin/factor,bjourne/factor,tgunr/factor,bpollack/factor