Hi Mehtaz,
already understood that I can use CSS. Nevertheless, the problem would be worth a bug report to your developers, because as a user I choose a tool like Page Builder exactly because of the user-friendly interface compared to a CSS editor....
If the page builder offers the setting option for the row background, but it doesn't work, then a developer at your end should take a look at that. At least that is my expectation.
https://prnt.sc/SFkhxkIpRkra
The problem occurs when using the Qubic template. Since this is also from JoomShaper, I would like it to be compatible with the page builder. But I've learned that the problem also exists with other templates.
Best regards
Ernst