Grid rowspan bug? with filters

Here is example - https://snippet.dhtmlx.com/b9w5qx6v
Try type “test1” on the last “c3” column filter.

Hello.

Yes, thank you, I can see the problem.
But could you please, clarify what result do you expect to get in this situation?

Hello.
For myself, I temporarily solved the problem by disabling grouping if at least one filter is present. I added the code to the example DHTMLX Snippet Tool.
But the correct solution would be to align the cells vertically correctly.

Thank you for your clarification.
As I’ve noticed earlier the problem was confirmed and we’ll ty to find a solution in the future updates.
I’ll inform you about any progress on this issue,