Unreal Engine Issues
Unreal Engine Issues
[AI] FInstancedStruct is not dupilicated properly if values are different from an Actor's defaults
UE - AI - Jan 24, 2024A licensee reports that the values of an FInstancedStruct do not get properly duplicated if they differ from the default values of the Actor or TArray to which they belong. Possible short-term wo ...
UE4Editor does not start when there are no audio devices available
UE - Platform - Linux - Sep 26, 2018UE4Editor does not open when there are no audio input or output devices available. The editor hangs at 83% after it initializes the AudioMixer. This issue looks like it was caused by CL 4396954. Et ...
Compile button disappears and Hot Reload stops working after failing to Hot Reload in some cases
UE - Foundation - Core - Jun 2, 2016When 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, 2016A 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-CoreUObject.dylib!FArchiveAsync2::Serialize() when cooking for iOS on Mac
UE - Platform - Mobile - Jul 27, 2017This 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 ...
Crash occurs when diffing blueprint that has had one of its variables changed to a Soft Object Reference
UE - Gameplay - Blueprint Editor - Oct 3, 2017A crash occurs when diffing a blueprint that contains an array that has changed from an Object Reference to a Soft Object Reference. Note: I figured that this could be related to another bug that I ...
Mouse cursor does not disappear when widget has focus
UE - Editor - UI Systems - Nov 20, 2017THere 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, 2017There 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, 2018There 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 ...
Device Token can not be Acquired When Remote Notification on iOS
UE - Platform - Mobile - Dec 3, 2018I received a report that there is a situation in UE 4.21 that it is not possible to acquire push notification device token on iOS And they seem to have solved the problem by fixing the following pa ...