I assume that you are using Artificer template. So, try this: In Studio klick on Artificer Module, then klick on "Styles". In section "Custom Styles" copy this:

.bx-base-unit-showcase-wrapper {
	padding-left: 55px;
	padding-right: 55px;
}

Note, that's just a quick and dirty fix. Maybe you have to adjust the padding px a bit. Since I use the Protean template, the dev's fix for that issue I reported is still working.

No problem. The devs will certainly provide a better and durable solution for fixing layout issues in Artificer https://github.com/unacms/una/issues/4698