Spreadsheet drag selection not highlighting

Dear Developer,

Spreadsheet drag selection is not highlighting in the pro version when I used it with flat.css skin. When I remove flat.css it is highlighting in the spreadsheet.

May I know how to get the drag selection highlight to work with all skin?

Thanks

Hello,
Unfortunately, I can’t reproduce the issue. According to local tests, the block of selected cells will be gray in the Flat skin in Webix 8.3
So in order to clarify the source of the issue, could you please check the local sample at samples\\09_skins\\03_flat.html and check does the problem repeats?
Additionally, you can try to customize the existing style of the SpreadSheet depending on your needs, for example:
https://snippet.webix.com/ulsaeydj