Are the UE 5.2 Landscaping tools broken?

The Smooth and Flatten tools are acting very weirdly. Smooth refuses to smooth between some places and flatten just chooses a random height and flattens everything to random arbitrary heights.

Following up to this forum question: WHAT THE HECK DID THEY DO TO THE LANDSCAPING TOOLS IN UE5??!?!!!?!?1?!?


Ok so uh, why tf is the flatten tool shaping out the landscape into the Unreal logo??? WHAT IS GOING ON IN HERE