Unreal Engine Issues

Combo box does not function in packaged build

The ComboBox (string) element for UMG is not correctly displaying, The array options do not appear and can not be selected, for the packaged build, while PIE behaves as expected. Regression: This ...

BinnedMalloc and BinnedMalloc2 performance on Linux is not good

This test took 13 seconds using Binned2 and 10 seconds using Binned1. It took 0.06 seconds using jemalloc ...

java.lang.UnsatisfiedLinkError crash on Xiaomi M4

This one is very odd; libUE4.so must not have loaded for some reason. Seems odd to only happen on one device. ...

Level Sequence option "Allow Level Edits Only" causes Frame Rate drop when used

When using the new option "Allow Level Edits Only" there is a drastic frame rate drop while playing the sequencer. This frame rate drops when only using this option. Versions Tested: 4.16.3 - CL: 3 ...

Material static switch fails to retrieve correct value

Expose ULandscapeLayerInfoObject to blueprint as EditorApplySpline() blueprint function as an argument for this type

Expose ULandscapeLayerInfoObject to blueprint as EditorApplySpline() blueprint function as an argument for this type. Some testing might be required to be sure it's not assumed somewhere in the code ...

Content ordering for assets with full numeric names.

Content files that are labeled with both text and numeric values sort correctly, but files containing only numbers, don't share this behavior and end up with weird sorting order. MyMat_20, MyMat_20 ...

Namespaces are not removed when importing Skeletal Meshes from FBX, and breaks the importing of referenced Animations

Namespaces in skeletal mesh FBXs are coming in as prefixes to the bone name. This issue did not appear in 4.19.2 (CL-4033788), as seen in the attached picture. This issue was reported and tested in ...

Unimplemented Simplygon function causes empty mesh LODs and crashes

When we do the refactor for MeshDescription we miss the staticmesh reduction project settings option and change only the quadric reduction. There are two possible fixes for this issue: 1. Implemen ...

LLDB 2-byte char data formatter script fails in Android Studio

Android Studio does not properly parse the UE4DataFormatters_2ByteChars.py distributed in 4.20. ...