Unreal Engine Issues

Serialized Blueprints containing MIDs do not load correctly in packages.

This issue is an easy fix but raises a different problem which is likely ingrained in UE, which is that MIDs should not be serialized out and should always be transient. Unfortunately we are in a po ...

[CrashReport] UE4Editor_MediaAssets!UMediaPlayer::GetPlaylistRef() [mediaplayer.h:890]

Comment from user:double clicked on a media player asset that I just cloned 880 /** 881 * Get the current play list. 882 * 883 * @return The play list. 88 ...

[CrashReport] UE4Editor_Engine!FExpressionInput::Connect() [materialshared.cpp:129]

User comment from crash group:Saving a material layer blend asset. ...

If a HUD blueprint and a UMG blueprint share a material. The material will not show up in Standalone

If a HUD blueprint and a UMG blueprint share a material. The material will not show up in Standalone Note: Sample project is attached ...

Crash importing layered materials from 4.25 to 4.26/4.27

Instance Static Meshes spawned at Runtime do not have collision

Spawning an Instance Static Mesh at runtime does not have collision. This issue appears only in 4.8 Preview 1 and the 4.8 Release branch (tested on CL-2540862), but is fixed in Main Branch as of Ma ...

AI Move To Location zeros velocity each call, causing the AI Pawn to freeze if told to move again before reaching destination

AI Move To Location causes AI to lose velocity each time it is called, resulting in a freeze in movement on each call. Regression: Yes Worked: 4.12.5 (CL 3039270) Broken: 4.13.0 (CL 3106830) Funct ...

-binnedmalloc is broken on Linux

In 4.13 launching a linux game with -binnedmalloc will use the binned allocator. In 4.14 the command line was accidentally changed to -binnedmalloc1 while making other changes. It is still -binnedm ...

Content Examples: Blueprints_Overview Stand 1.7 Spark particle system does not fire from coin

During runtime, the red coin in Stand 1.7 on the Blueprints_Overview map of Content Examples should emit a large spark particle system 5 times. While investigating, I tried disabling "Use Fixed Rel ...

Map load stalls in texture streaming code

A change was made to AActor.GetComponents which appends the results instead of resetting the output array. This seems to only impact 2 places in the code, and has a big side effect in the texture st ...