Unreal Engine Issues and Bug Tracker (UE-144218)

Steps to Reproduce

Start modeling mode, then start CubeGr (CubeGrid) tool.
Make any kind of selection (click+drag) in the CubeGrid tool.
Drag the "Block Base Size" parameter in the details panel to the left to try to make it 0, or type 0 there.
Editor hangs until it runs out of memory.

There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-144218 in the post.

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Fixed

Component	UE - LD & Modeling - Modeling Tools - Mesh Editing
Affects Versions	5.0
Target Fix	5.0

Fix Commit	19215094
Main Commit	19214872

CubeGrid Tool locks editor if cube size is set too small