Unreal Engine Issues and Bug Tracker (UE-106192)

Steps to Reproduce

Open a UE4.26 project.
Enable the polygon editing plugin from Edit>Plugins
Find a StaticMesh asset and open the StaticMesh editor.
In the top toolbar, open the dropdown menu under the "UV" button and select "Generate UVs"

Result: a new empty window will open with the text "unrecongized tab".

Expected: The UV generation tool opens correctly.

There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-106192 in the post.

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Fixed

Fix Commit	15089970
Release Commit	15089970

StaticMeshEditor - "Generate UV" tool no longer works