fix a preview issue
fix a preview issue

cnbin/webuploader,zhaosichao/webuploader,fex-team/webuploader,greatpie/WebUploader,cnbin/webuploader,yuefengkai/webuploader,herohenu/webuploader,WPG/webuploader,leiallen/webuploader,fengshao0907/webuploader,2betop/webuploader,fengshao0907/webuploader,baitongda/webuploader,VioletLife/webuploader,fengshao0907/webuploader,jimmywang1994/webuploader,Youraiseme/webuploader,Janson-Leung/webuploader,webwlsong/webuploader,orangemi/webuploader,MienDev/webuploader,pjkui/webuploader,allsmy/webuploader,tarobjtu/webuploader,WPG/webuploader,yuefengkai/webuploader,fengshao0907/webuploader,Youraiseme/webuploader,ikenneth/webuploader,lovelykobe/webuploader,Markxuxiao/webuploader,VioletLife/webuploader,baiyanghese/webuploader,Youraiseme/webuploader,caizhifu/webuploader,WPG/webuploader,dianerdianer/webuploader,allsmy/webuploader,NTASTE/webuploader,meleslilijing/webuploader,VioletLife/webuploader,orangemi/webuploader,orangemi/webuploader,tarobjtu/webuploader,profitfrl/webuploader,herohenu/webuploader,jimmywang1994/webuploader,ouyang90/webuploader,wangyun122/webuploader,Markxuxiao/webuploader,2betop/webuploader,greatpie/WebUploader,lovelykobe/webuploader,cnbin/webuploader,xiexingen/webuploader,BobJavascript/webuploader,jimmywang1994/webuploader,admpub/webuploader,admpub/webuploader,xiexingen/webuploader,rwecho/webuploader,profitfrl/webuploader,NTASTE/webuploader,wxmfront/webuploader,allsmy/webuploader,Janson-Leung/webuploader,jimmywang1994/webuploader,Rudy24/webuploader,git-lt/webuploader,jimmywang1994/webuploader,Yumozhi/webuploader,Youraiseme/webuploader,greatpie/WebUploader,dianerdianer/webuploader,profitfrl/webuploader,NTASTE/webuploader,wxmfront/webuploader,leiallen/webuploader,wangyun122/webuploader,pjkui/webuploader,meleslilijing/webuploader,git-lt/webuploader,Rudy24/webuploader,Rudy24/webuploader,allsmy/webuploader,tarobjtu/webuploader,lovelykobe/webuploader,baiyanghese/webuploader,meleslilijing/webuploader,2betop/webuploader,jimmy-yao/webuploader,zhaosichao/webuploader,xiexingen/webuploader,BobJavascript/webuploader,NTASTE/webuploader,NTASTE/webuploader,admpub/webuploader,jimmy-yao/webuploader,fengjianjunstudy/webuploader,tarobjtu/webuploader,baitongda/webuploader,MienDev/webuploader,wxmfront/webuploader,BobJavascript/webuploader,baiyanghese/webuploader,VioletLife/webuploader,Janson-Leung/webuploader,pjkui/webuploader,pjkui/webuploader,admpub/webuploader,xiexingen/webuploader,wangyun122/webuploader,profitfrl/webuploader,fengshao0907/webuploader,leiallen/webuploader,zhaosichao/webuploader,rwecho/webuploader,baiyanghese/webuploader,Markxuxiao/webuploader,Markxuxiao/webuploader,greatpie/WebUploader,lovelykobe/webuploader,baiyanghese/webuploader,caizhifu/webuploader,VioletLife/webuploader,baiyanghese/webuploader,wxmfront/webuploader,yuefengkai/webuploader,zhaosichao/webuploader,Youraiseme/webuploader,Yumozhi/webuploader,zhaosichao/webuploader,git-lt/webuploader,rwecho/webuploader,Janson-Leung/webuploader,admpub/webuploader,greatpie/WebUploader,rwecho/webuploader,git-lt/webuploader,ikenneth/webuploader,leiallen/webuploader,Yumozhi/webuploader,wangyun122/webuploader,Yumozhi/webuploader,orangemi/webuploader,Markxuxiao/webuploader,BobJavascript/webuploader,xiexingen/webuploader,Yumozhi/webuploader,git-lt/webuploader,WPG/webuploader,Rudy24/webuploader,fengjianjunstudy/webuploader,jimmywang1994/webuploader,rwecho/webuploader,BobJavascript/webuploader,lovelykobe/webuploader,tarobjtu/webuploader,ouyang90/webuploader,ikenneth/webuploader,Youraiseme/webuploader,herohenu/webuploader,dianerdianer/webuploader,MienDev/webuploader,yuefengkai/webuploader,rwecho/webuploader,fengjianjunstudy/webuploader,Markxuxiao/webuploader,caizhifu/webuploader,leiallen/webuploader,wangyun122/webuploader,wangyun122/webuploader,fex-team/webuploader,webwlsong/webuploader,dianerdianer/webuploader,fengjianjunstudy/webuploader,2betop/webuploader,zhaosichao/webuploader,webwlsong/webuploader,fengjianjunstudy/webuploader,webwlsong/webuploader,caizhifu/webuploader,ouyang90/webuploader,fex-team/webuploader,ikenneth/webuploader,fengjianjunstudy/webuploader,MienDev/webuploader,greatpie/WebUploader,pjkui/webuploader,jimmy-yao/webuploader,meleslilijing/webuploader,baitongda/webuploader,profitfrl/webuploader,fex-team/webuploader,jimmy-yao/webuploader,jimmy-yao/webuploader,fengshao0907/webuploader,2betop/webuploader,WPG/webuploader,leiallen/webuploader,jimmy-yao/webuploader,MienDev/webuploader,herohenu/webuploader,Janson-Leung/webuploader,baitongda/webuploader,WPG/webuploader,baitongda/webuploader,tarobjtu/webuploader,wxmfront/webuploader,Rudy24/webuploader,MienDev/webuploader,cnbin/webuploader,cnbin/webuploader,dianerdianer/webuploader,ouyang90/webuploader,yuefengkai/webuploader,ouyang90/webuploader,VioletLife/webuploader,BobJavascript/webuploader,profitfrl/webuploader,ikenneth/webuploader,pjkui/webuploader,dianerdianer/webuploader,allsmy/webuploader,fex-team/webuploader,admpub/webuploader,orangemi/webuploader,wxmfront/webuploader,cnbin/webuploader,herohenu/webuploader,caizhifu/webuploader,Rudy24/webuploader,lovelykobe/webuploader,allsmy/webuploader,ikenneth/webuploader,baitongda/webuploader,herohenu/webuploader,caizhifu/webuploader,meleslilijing/webuploader,webwlsong/webuploader,webwlsong/webuploader,meleslilijing/webuploader,Janson-Leung/webuploader,fex-team/webuploader,orangemi/webuploader,Yumozhi/webuploader,ouyang90/webuploader,git-lt/webuploader,yuefengkai/webuploader,xiexingen/webuploader,NTASTE/webuploader