Why split task get disappear when i am scrolling down the gantt chart?

Currently, I have split task feature and I split a task in the Gantt chart, the split task disappears as I scroll down. However, the split task reappears when I scroll back to the original position. Can you help me fix this issue?
@ramil @ArtyomBorisevich

Hello,

Probably, it is related to Gantt configuration, but it is hard to suggest what might be wrong as I don’t see your code.
Please, reproduce the issue in the snippet, then click on the “Save” button and send me the link:

Or send me a ready demo with all the necessary JavaScript and CSS files so that I can reproduce the issue locally.

my code is too large how i can reproduce this?

Hello,

Please try to simplify your code, so that only split tasks functionality remains. Make sure the problem is reproduced in snippet, then click on the “Save” button and send me the link:

Or send me a simplified demo, so that I can reproduce the issue locally.