Unreal Engine Issues

Full screen mode when using a laptop with Optimus ignores the gama setting

When using full-screen mode on a optimus laptop the gama that is set for the system appears to be ignored and uses the default setting, even if it has been adjusted in Windows display calibration se ...

Access None with Event Hit to get Physical Material type

When trying to get a hit result from physical material using a event hit node there will be a access none error caused in the log. This is the exact error presented: Error Accessed None 'CallFunc_B ...

Opening Floating Editor Window Locks Camera to Upward Position

Using the shortcut "Ctrl + E" to open the static mesh editor in it's own floating window results in the camera locking in the upward position in the Main Viewport (*not* the viewport of the Static M ...

Cannot use "ProjectName (Debug) (ProjectName)" debug configuration in VSCode on Mac with binary Engine installation

Attempting to debug in VSCode on a Mac using the ProjectName (Debug) (ProjectName) configuration fails due to a missing precompiled file in the binary Engine installation. REGRESSION: No. The same ...

Can't connect nor send packet via TCP socket in iOS

TCP Socket messaging in iOS seems not working.  ...

Pasting timeline components into another actor and then choosing "cancel" on fix self context function references results in a broken state

upd. Regression was checked on //UE4/Release-4.26 CL 15973114, issue was reproduced. Regression - No ...

Lumen Software Raytracing has big lighting difference comparing to Hardware raytracing

[Quartz][Crash] - Subscribing to All Quantization Events and then playing a sound on all Quantization boundaries crashes the editor

Hit this when I made a blueprint and Subscribed to ALL quantization events instead of the one I was interested it and tried to use all of them as my Quantization Boundary. The alt title of this bug ...

LandscapeSplineMeshesActor instances not deleted when World Partition is disabled

When landscape splines exist in a WP level, LandscapeSplineMeshesActor instances are created to allow streaming of splines. In a non-WP level, splines are components of the landscape actor. When a W ...

It is possible for PreLoadScreen to leak memory when an EngineLoadingScreen returns IsDone while still loading

It is possible for a class that implements IPreLoadScreen to leak memory if GetPreLoadScreenType returns EngineLoadingScreen and IsDone returns true before the engine signals loading is completed vi ...