fix transition tests for Firefox
fix transition tests for Firefox

Endika/vue,yuByte/vue,JosephSilber/vue,coopsource/vue,lepture/vue,macroxing/vue,lovewitty/vue,karevn/vue,cgvarela/vue,galenyuan/vue,lishengzxc/vue,jhaesus/vue,yuche/vue,cuhuak/vue,meleslilijing/vue,PUSEN/vue,Suixinlei/vue,galenyuan/vue,AtChina/vue,karevn/vue,lazarofl/vue,echoZQ/vue,cheapsteak/vue,lovewitty/vue,shupan123/vue-fixed-type,bsn069/vue,squallyan/vue,wangjun/vue,jRoadie/vue,nkovacs/vue,zsh2938/vue,th0r/vue,lazarofl/vue,Alen-gao/vue,meiwenhui/vue,gxr1020/vue,15521316173/vue,VictorChaun/vue,diermengdierme/vue,Zeratul5/vue,cnbin/vue,KuroGuo/vue,Alen-gao/vue,coopsource/vue,lepture/vue,WQuanfeng/vue,beni55/vue,th0r/vue,Iamlars/vue,likaiwalkman/vue,seedalpha/vue,elvinzhu/vue,cgvarela/vue,Erane/vue,prosenjit-itobuz/vue,shupan123/vue-fixed-type,Suixinlei/vue,karevn/vue,squallyan/vue,VimVincent/vue,WQuanfeng/vue,knownasilya/vue,AtChina/vue,ke-pan/vue,cnbin/vue,noyobo/vue,diermengdierme/vue,lishengzxc/vue,wangjun/vue,r14r/fork_javascript_vue,meiwenhui/vue,zsh2938/vue,gold3bear/vue,Erane/vue,r14r/fork_javascript_vue,Endika/vue,yuByte/vue,VictorChaun/vue,fergaldoyle/vue,rohmad-st/vue,shupan123/vue-fixed-type,JsAaron/vue,macroxing/vue,cheapsteak/vue,gold3bear/vue,seedalpha/vue,zOxta/vue,ke-pan/vue,bsn069/vue,haner199401/vue,gxr1020/vue,meleslilijing/vue,kazupon/vue,lepture/vue,nfriend/vue,likaiwalkman/vue,15521316173/vue,GloriaCHL/vue,jwdeitch/vue,JosephSilber/vue,diermengdierme/vue,jRoadie/vue,echoZQ/vue,GloriaCHL/vue,knownasilya/vue,fergaldoyle/vue,haner199401/vue,Iamlars/vue,endaaman/vue,noyobo/vue,yuche/vue,th0r/vue,Jonavin/vue,elvinzhu/vue,cuhuak/vue,nkovacs/vue,longjl/vue,PUSEN/vue,jhaesus/vue,loki315zx/vue,Endika/vue,loki315zx/vue,prosenjit-itobuz/vue,beni55/vue,jwdeitch/vue,endaaman/vue,zOxta/vue,Zeratul5/vue,galenyuan/vue,kazupon/vue,KuroGuo/vue,VimVincent/vue,longjl/vue,seedalpha/vue,Jonavin/vue,JsAaron/vue,mubassirhayat/vue,fergaldoyle/vue,rohmad-st/vue