Unreal Engine Issues

[Quartz][Device Swap] - Quartz Clock Stops when swapping Audio Output Device

When swapping the audio output device while running PIE or a packaged game on Windows, Quartz clocks stop. Does not repro in Release-4.27, but can be reproed in Release-5.0. ...

Text doesn't update when wrapped in a Retainer Box

This is a Regression. Retainer box is prevent Text to update in different situations including binding the text. ...

Old iTunes DLL causes UBT to fail on startup

Compiling blueprint component can lose data on instances in level

Compiling a blueprint component can cause data loss on instances in the level when the component instance overrides its owning Blueprint's property value overrides back to the component archetype's ...

TArrayView64 RangeCheck prints the incorrect error messages for values over 32-bit length

TArrayView64 RangeCheck prints the incorrect error messages for values over 32 bit. Repro Rate: 4/4 Tested this in //UE4/Release-4.27 @ CL#18319896 and the issue did occur there, it is not a regre ...

Private functions can be overriden in the "My Blueprint" tab

Discovered during investigation of [Link Removed]. This is happening because we are not filtering out private parent functions in SMyBlueprint::BuildOverridableFunctionsMenu. With any fix that is ...

Editor crashes when edit foliage assigned to data layer in foliage mode

Importing Vehicle content corrupts SportsCar_AnimBP

If the player imports the Vehicles pack into a blank project some of the cars blueprints will be corrupt and cannot be loaded. This appears to only happen to the Animation blueprints. ...

Running VR Template with DirectX11 and Instanced Stereo causes massive memory leaks

Massive memory leak occurs when using dx11 in the VR Template. The memory leak maxed at 18GB after hour and a half. This issue does not happen with dx12, Metal or Vulkan. Issue does not occur when I ...

The IndirectLightingSHSingleCoefficient for translucency on mobile is too bright