As of 37.50, every project is indicating it has Experimental Settings Turned On, even when they are not

[Flak]

Fortnite Ecosystem v37.50 with Known Issues

We’re investigating an issue where UEFN developers may receive an “Experimental Feature” flag, even when there are no experimental features on the island. You will still be able to publish your island. We will let you know when we have an update or a fix.