Why isn't my landscape layer working?

Yesterday, I had some problems with my landscape. I fixed some old errors and restarted the program. But then, my custom grass layer material disappeared. I managed to bring it back by recreating its info layer. However, now I can’t paint with the specific layer, or erase it! For context, that one grass layer works on new landscape, just not on my original one.

@eatyoushay Thank you for your report! We would like to look into this further, would you be able to submit a bug report using the form available here? Fortnite Creative