Compile button disappears and Hot Reload stops working after failing to Hot Reload in some cases

UE - Foundation - Core - Jun 2, 2016

When failing to hot reload in some cases, the compile button in the editor will disappear and Hot Reloads will stop occurring. This tends to happen randomly in other scenarios but the method above i ...

Changing BlueprintCallable function's code results in Warning in blueprint that should be considered an Error

UE - Gameplay - Blueprint - May 3, 2016

A user reported an issue where, if a BlueprintCallable function's parameters are edited, a blueprint using a BlueprintCallable function will give warnings instead of an error for a problem after the ...

[CrashReport] UE4Editor_UnrealEd!UnFbx::FFbxImporter::RecursiveBuildSkeleton()

UE - Editor - Content Pipeline - Import and Export - Jul 30, 2015

This is a common crash affecting users. User DescriptionsJust import a Mesh of Fuse Source Context 624 void UnFbx::FFbxImporter::RecursiveBuildSkeleton(FbxNode* Link, TArray<FbxNode*>& Out ...

[CrashReport] UE4Editor_Sequencer!FSequencer::NotifyMovieSceneDataChanged()

UE - Anim - Sequencer - Jul 24, 2017

This is a common crash affecting users in 4.16 and into the 4.17 Preview. User Descriptionscopying-pasting curves in Sequencer Source Context 979 void FSequencer::NotifyMovieSceneDataCha ...

[CrashReport] UE4Editor-CoreUObject.dylib!FArchiveAsync2::Serialize() when cooking for iOS on Mac

UE - Platform - Mobile - Jul 27, 2017

This is a Mac cooking for iOS commandlet crash that has occurred occasionally for some users in 4.16. Example Command Line (PII removed)/Users/---/Desktop/---/---.uproject -run=Cook -NoLogTimes -T ...

Mouse cursor does not disappear when widget has focus

UE - Editor - UI Systems - Nov 20, 2017

THere is an issue with the Mouse cursor when using UMG with the set show mouse cursor option. after setting the set show mouse cursor off pressing a widget and giving it focus causes the mouse curso ...

Blueprint Function Reorder displays error tooltip when trying to reorder functions

UE - Gameplay - Blueprint Editor - Dec 7, 2017

There is an issue when attempting to reorder blueprints where Blueprint Function Reorder displays error tooltip when trying to reorder functions. In previous engine versions, functions could not be ...

Pixelated texture has material artifacts occur when two corners are covered

UE - Graphics Features - Feb 2, 2018

There is an issue with ramp-like textures where multiple corners are covered when you apply the mesh with the alpha channel on, there is a strange border that appears around the whole plane mesh tha ...

Atmospheric Fog Sun Disc Has Wrong Intensity

UE - Graphics Features - May 4, 2018

This behavior has been observed in 4.18.3, 4.19.2, and Main (CL 4048405). Note that adding  BP_Sky_Sphere to the scene and assigning the Directional Light Actor to it will fix the issue. Per User: ...

Atmospheric Fog Sun Disc Has Wrong Intensity

UE - Graphics Features - May 4, 2018

This behavior has been observed in 4.18.3, 4.19.2, and Main (CL 4048405). Note that adding  BP_Sky_Sphere to the scene and assigning the Directional Light Actor to it will fix the issue. Per User: ...