fix box-zoom regression, close #3633
fix box-zoom regression, close #3633

AndBicScadMedia/Leaflet,iZucken/Leaflet,msokk/Leaflet,devjoseluis/Leaflet,tsantacruz/RotationalMarker,geoloep/Leaflet,kjell/Leaflet,snkashis/Leaflet,2gis/Leaflet,Neorth/Leaflet,psicomante/Leaflet,pzdz/Leaflet,andrewmartini/Leaflet,jmutua2015/Leaflet,Trufi/Leaflet,akauppi/Leaflet,kjell/Leaflet,litnerdy/Leaflet,hyperknot/Leaflet,Leaflet/Leaflet,Leaflet/Leaflet,webmechanicx/Leaflet,iOffice/Leaflet,akrzyzanowskino/TeamSE,frogcat/Leaflet,Neorth/Leaflet,MuellerMatthew/Leaflet,andrewmartini/Leaflet,jasonoverland/Leaflet,grahamthompson/Leaflet,bolshoibooze/Leaflet,caiiiycuk/Leaflet,thalesfsp/Leaflet,javimolla/Leaflet,cmulders/Leaflet,cartant/Leaflet,wrrnwng/Leaflet,fredericksilva/Leaflet,w8r/Leaflet,Andrey-Pavlov/Leaflet,wpf500/Leaflet,codeator/Leaflet,CapeSepias/Leaflet,cmulders/Leaflet,tomnod/Leaflet,2gis/Leaflet,Srikanth4/Leaflet,nikhildhamsaniya/Leaflet,sambernet/Leaflet,bolshoibooze/Leaflet,Trufi/Leaflet,Fil/Leaflet,pakro/Leaflet,waeltken/Leaflet,davojta/Leaflet,RyanHickman/Leaflet,stefanocudini/Leaflet,sambernet/Leaflet,starsolaris/Leaflet,akauppi/Leaflet,alex2wong/Leaflet,billybonz1/Leaflet,iOffice/Leaflet,sisou/Leaflet,tormi/Leaflet,olafurr/Leaflet,sisou/Leaflet,CorainChicago/Leaflet,andrewmartini/Leaflet,elkingtonmcb/Leaflet,psicomante/Leaflet,starsolaris/Leaflet,jblarsen/Leaflet,thalesfsp/Leaflet,Ubisense/Leaflet,nycitt/Leaflet,stefanocudini/Leaflet,grahamthompson/Leaflet,fab1an/Leaflet,klaftertief/Leaflet,iamjonbradley/Leaflet,sellonen/Leaflet,cartant/Leaflet,elfalem/Leaflet,taraszerebecki/Leaflet,devjoseluis/Leaflet,taraszerebecki/Leaflet,litnerdy/Leaflet,elkingtonmcb/Leaflet,fredericksilva/Leaflet,Andrey-Pavlov/Leaflet,Trufi/Leaflet,tormi/Leaflet,tomnod/Leaflet,devjoseluis/Leaflet,RobertoMalatesta/Leaflet,RobertoMalatesta/Leaflet,elkingtonmcb/Leaflet,cartant/Leaflet,RyanHickman/Leaflet,olafurr/Leaflet,waeltken/Leaflet,taraszerebecki/Leaflet,akrzyzanowskino/TeamSE,Fil/Leaflet,MuellerMatthew/Leaflet,iZucken/Leaflet,kumy/Leaflet,kumy/Leaflet,huangsong/Leaflet,Srikanth4/Leaflet,dhootha/Leaflet,javimolla/Leaflet,nycitt/Leaflet,jmutua2015/Leaflet,msiadak/Leaflet,stefanocudini/Leaflet,elfalem/Leaflet,codeator/Leaflet,bbecquet/Leaflet,prashen/Leaflet,webmechanicx/Leaflet,tbassett44/Leaflet,w8r/Leaflet,msiadak/Leaflet,Fil/Leaflet,RobertoMalatesta/Leaflet,geoloep/Leaflet,twoubt/Leaflet,davidlukerice/Leaflet,w8r/Leaflet,beni55/Leaflet,tsantacruz/RotationalMarker,nathancahill/Leaflet,akrzyzanowskino/TeamSE,billybonz1/Leaflet,psicomante/Leaflet,2gis/Leaflet,pzdz/Leaflet,tomnod/Leaflet,scaddenp/Leaflet,nikhildhamsaniya/Leaflet,nathancahill/Leaflet,Ossehoht/Leaflet,jmutua2015/Leaflet,prashen/Leaflet,davidlukerice/Leaflet,scaddenp/Leaflet,litnerdy/Leaflet,mediasuitenz/Leaflet,AP-whitehat/Leaflet,msokk/Leaflet,beni55/Leaflet,scaddenp/Leaflet,davidlukerice/Leaflet,CapeSepias/Leaflet,codeator/Leaflet,nathancahill/Leaflet,twoubt/Leaflet,wancharle/Leaflet,hyperknot/Leaflet,klaftertief/Leaflet,brah/Leaflet,eriksjaastad/Leaflet,mediasuitenz/Leaflet,wancharle/Leaflet,dhootha/Leaflet,eriksjaastad/Leaflet,grahamthompson/Leaflet,wrrnwng/Leaflet,bolshoibooze/Leaflet,davojta/Leaflet,fredericksilva/Leaflet,tbassett44/Leaflet,nikhildhamsaniya/Leaflet,brah/Leaflet,klaftertief/Leaflet,sisou/Leaflet,msiadak/Leaflet,Ossehoht/Leaflet,nycitt/Leaflet,snkashis/Leaflet,rlugojr/Leaflet,mbrukman/Leaflet,pakro/Leaflet,kumy/Leaflet,cmulders/Leaflet,billybonz1/Leaflet,caiiiycuk/Leaflet,wpf500/Leaflet,beni55/Leaflet,twoubt/Leaflet,AndBicScadMedia/Leaflet,dhootha/Leaflet,javimolla/Leaflet,bbecquet/Leaflet,iamjonbradley/Leaflet,rlugojr/Leaflet,CorainChicago/Leaflet,waeltken/Leaflet,iOffice/Leaflet,Ubisense/Leaflet,CapeSepias/Leaflet,snkashis/Leaflet,frogcat/Leaflet,iZucken/Leaflet,Leaflet/Leaflet,AP-whitehat/Leaflet,caiiiycuk/Leaflet,jblarsen/Leaflet,mediasuitenz/Leaflet,Ossehoht/Leaflet,mbrukman/Leaflet,eriksjaastad/Leaflet,jasonoverland/Leaflet,alex2wong/Leaflet,davojta/Leaflet,wancharle/Leaflet,alex2wong/Leaflet,frogcat/Leaflet,geoloep/Leaflet,huangsong/Leaflet,tormi/Leaflet,CorainChicago/Leaflet,AP-whitehat/Leaflet,tbassett44/Leaflet,iamjonbradley/Leaflet,starsolaris/Leaflet,Andrey-Pavlov/Leaflet,jblarsen/Leaflet,mbrukman/Leaflet,msokk/Leaflet,sellonen/Leaflet,fab1an/Leaflet,pzdz/Leaflet,olafurr/Leaflet,sambernet/Leaflet,elfalem/Leaflet,AndBicScadMedia/Leaflet,akauppi/Leaflet,jasonoverland/Leaflet,tsantacruz/RotationalMarker,rlugojr/Leaflet,MuellerMatthew/Leaflet,thalesfsp/Leaflet,prashen/Leaflet,webmechanicx/Leaflet,Ubisense/Leaflet,fab1an/Leaflet,Neorth/Leaflet,sellonen/Leaflet,wpf500/Leaflet,Srikanth4/Leaflet,RyanHickman/Leaflet,brah/Leaflet,huangsong/Leaflet,wrrnwng/Leaflet,pakro/Leaflet,hyperknot/Leaflet,bbecquet/Leaflet