Release Notes for 531

Add support for nonuniformly scaling Union parts behind a Beta Feature.

Improved performance of light grid (voxel lighting) when light grid relocates

The details panel in Material Manager can now be hidden if a Material is selected.

Adds a back button to Toolbox searches.

Future lighting performance improvements

Added a new method (RBXScriptSignal:Once) which behaves similar to RBXScriptSignal:Connect, but disconnects immediately when a signal occurs to ensure the callback is only invoked once.

Fixed a bug related to setting ActuatorRelativeTo for the LinearVelocity Constraint. Blue arrows should now always point in the direction of motion.

Roblox Player and Roblox Studio build from XCode-13 tool chain

Fixed a bug where Opportunistic Stream Out streaming mode would sometimes cancel pending RequestStreamAroundAsync for Clients.

Fixed mac player/studio channel switching problem.

The LogService.MessageOut event should now fire properly with tables and other variants in the print statement arguments.

Note: the message will be truncated in the event handler if it's longer than 2048 characters.

This fixes the following: https://devforum.roblox.com/t/1730251

Fix issue with 'Save to Roblox' sometimes failing to function for models

Properly delete webview cookies for Studio on logout and on start up.

Fixed UserInputService:GetMouseLocation() returning incorrect results inside of BillboardGui/SurfaceGui InputBegan/InputChanged/InputEnded events.