Subtasks disappear

I using smart_rendering and set the parent task “render”: “split”,
when scroll gantt, the sub task will disappear,
If parent task’s row_height is beyond the gantt visible area, this problem will arise

https://snippet.dhtmlx.com/vp2qr44c

but if use smart_rendering:false, it works fine.

Hello,
Thank you for the detailed description. It seems like a bug. I’ve added it to our tracker for further investigation. I’ll keep you updated.