How to solve this blank problem?

[menglin]

When the Gantt chart is hidden, pulling down the column, dragging the column or zooming in and out of the browser window will cause the task to be blank.
How to solve this blank problem?

[ramil]

Hello Zhang,
It is hard to suggest what might be wrong as I don’t see your code.

Please add your configuration to the following snippet and make sure that the issue is reproduced there:

DHTMLX - Gantt. Initialization

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.

[menglin]

https://snippet.dhtmlx.com/g5snmup9

[ramil]

Hello Zhang,
I suppose this is related to the same issue:

Dhtmlx When a large amount of data scroll down the Gantt chart and then fold and expand the Gantt chart for many times, the mouse will scroll blank and then normal

Hello Zhang, Thank you for sending the snippet. When you reinitialize Gantt or use the resetLayout method, the scroll position and the layout cell sizes are not saved. So, after the layout is rendered, the scrollbar is displayed on the top position. This is expected behavior. If you want to keep the scroll position, you need to save it before reinitializing the data, then scroll to that position after Gantt is reinitialized. Here is an example of how it can be implemented: Unfortunately, I…

So, if you have an old version, you need to update to the newer version.