question with educational reason about uvsquares

[Radivarig]

This option syncs selection between UV Editor and 3D Viewport, adding some behavior that breaks the addon. When selecting vertices from UV Editor it will force select all vertices that share the same 3D Viewport location and when selecting faces from UV Editor it will only select those face vertices instead of all vertices that share the same 3D Viewport location contained in the surounding faces that touch.

There's a button in UV Editor panel that toggles this option.