Unreal Engine Issues

Fixed frame interval playback should be off by default

4.14 fails to launch on macOS High Sierra

The engine will crash in `FMacPlatformSplash::Show()` when trying to launch on macOS High Sierra. ...

GameplayTagEventMap is cleared on clients when "AbilitySystem.Fix.ReplicateTagCountContainerWithIris" is enabled

Fix AGameModeBase::GetGameSessionClass

AGameModeBase::GetGameSessionClass wasn't properly returning the set GameSessionClass. ...

Crash when launching 4.14.2 in cmd window with -dx12 argument

Launching the editor with DX12 from a command window is crashing the engine. Note Crash occurs on Nvidia version 376.19 and does not occur on 376.33 This is a Regression ...

Fixing a Blueprint's compilation error after editor reload causes instances to lose transform

Saving and reloading a Blueprint instance with a compilation error, a.k.a., "Bad Blueprint" will lead to a transform reset when the Blueprint is successfully recompiled. ...

[CrashReport] UE4Editor_UnrealEd!FEdGraphUtilities::PostProcessPastedNodes() [edgraphutilities.cpp:138]

This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Error message: Access violation - code c0000005 ( ...

Redundant Material Slots Added To Mesh With LODs After Upgrading To 4.14 And Higher

When upgrading a project that was prior to the material slot implementation to a newer engine version will cause redundant material slots to be created. This requires the mesh to have LODs and multi ...

4.14 Launcher version ships with UE4-VulkanRHI*.a but requires Github source

Launcher build ships with VulkanRHI Android binaries but do not seem to support Vulkan on Android from the launcher build without source. ...

SpeedTree static meshes corrupted converting project from 4.12 to 4.14

Speedtrees are just normal static meshes once they are in the engine, so if we are corrupting them across an engine upgrade that is really bad. ...