My water is messed up

I finished sculpting the landscape then I created the ocean but at Water Brush Managers Render Targets textures have some wrong data on them the places that I didn’t even sculpt are weirdly exists I cant edit those datas so idk how to fix it

(the problem occurred in the unreal engine 4.26 I restarted the project but didn’t work then upgraded to ue 5 early access that didn’t solve the issue too)