Fix on paste long document to editor might cause scroll not syncing
Fix on paste long document to editor might cause scroll not syncing

xnum/hackmd,aswathyjacob8/newtest,hackmdio/hackmd,jccrofty30/hackmd,Yukaii/hackmd,ironhack/hackmd,jccrofty30/hackmd,jackycute/HackMD,jccrofty30/hackmd,PeterDaveHello/hackmd,hackmdio/hackmd,Yukaii/hackmd,aswathyjacob8/newtest,xnum/hackmd,ironhack/hackmd,ironhack/hackmd,Yukaii/hackmd,xnum/hackmd,jackycute/HackMD,PeterDaveHello/hackmd,aswathyjacob8/newtest,Rwing/hackmd,Rwing/hackmd,hackmdio/hackmd,Rory80Hz/hackmd,Rory80Hz/hackmd,jackycute/HackMD,PeterDaveHello/hackmd,Rwing/hackmd,Rory80Hz/hackmd