Smart rendering doesn`t work in 3.5

Hi, If i move the scroll speedly, the smart rendering doesn’t work,
Any idea?

Be shure, thar you’ve include a PROF extantion dhtmlxtree_srnd.js …
What version do you use: standart or pro?

PROF and with teh include.
Some nodes make invisible…

Please, compare yourtree behaviour and behaviour of this tree:
If they aren’t the same - create ticket in support system and attach there completed demo … leted_demo