How to keep panels visible when going into Overview?

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Reddit - Dive into anything

https://www.reddit.com/r/kde/comments/so7tdi/a_button_to_activate_the_new_overview_effect_in/

In this video I see that the top panel somehow stays visible when they enable the overview effect, but I found no setting to do that, is it because I'm not using Latte dock, but using the built-in panel instead?