Unreal Engine Issues
Unreal Engine Issues
[CrashReport] UE4Editor_Engine!TArray<unsigned int,TAlignedHeapAllocator<0> >::BulkSerialize() [array.h:1173]
OLD - Anim - Mar 19, 2018Comments from users in crash group:I was loading my project which i have made a copy from previous version of the engine (4.18).4.19 preview crashed while opening my project on 90% ...
GetVoiceData() uninitializes VoiceCapture and returns no data
UE - Audio - Apr 27, 2018Using GetVoiceData causes VoiceCapture to become uninitialized and it is currently not possible to get voice data this way. Regression?: Yes This did not occur in 4.18 This occurs in 4.19 ...
Xbox 360 Controller DPad input does not register properly on Android
UE - Platform - Mobile - Jun 4, 2018Using a Xbox 360 controller on an Android device works except that the DPad input is not registered. This same issue does not occur with Xbox One controllers. Regression?: No This occurs in 4.18 ...
RF_WasLoaded is set to False in PIE for instances of a Blueprint if the Blueprint is recompiled
UE - Gameplay - Blueprint - Apr 5, 2019The RF_WasLoaded flag is set to false for Blueprint instances in PIE if the Blueprint is edited and compiled. This is fixed by saving the level which is a simple workaround but this should be needed ...
Cannot change Collision Profile of BP component instances
UE - Simulation - Physics - Oct 24, 2019BP instances placed in level cannot have their components' collision profiles modified to anything other than default and custom. Note that this did not occur in 4.22 (after applying the separate ...
Niagara system loses source emitters when moving Engine from 4.22 or earlier to 4.23 or later.
UE - Niagara - Nov 29, 2019The following code causes this behavior.// NiagaraSystem.cpp for (FNiagaraEmitterHandle& EmitterHandle : EmitterHandles) { EmitterHandle.ConditionalPostLoad(NiagaraVer); if (!EmitterHandl ...
Problems in skeletal mesh merge
UE - Editor - Content Pipeline - Asset Build - May 10, 2021There are a few issues a licensee has found with the skeletal mesh merge operation. See the UDN for more details and the proposed fixes. Note, the issue with the cloth merge is already logged in a ...
bIgnoreAllPressedKeysUntilRelease only applies to keys in the previous mapping
UE - Gameplay - Input - Jun 16, 2022This is because the RebuildControlMappings function only checks this flag when you have a mapping that was already added, we should apply this for any new mappings as well. I'll update the repro s ...
Disabling bLerpUVs in Nanite Settings of Static Mesh causes texture warping in clusters
UE - Graphics Features - Nanite - Jan 21, 2025The licensee has identified a potential fix by changing if( Settings.bLerpUVs ) to if( Settings.bLerpUVs || UVIndex == 0 ) On line 389 of NaniteBuilder\Private\Cluster.cpp in UE 5.5 ...
set negative values in 'New window position' to set position of 'Play in New Window'
Tools - Mar 30, 2018Selecting negative values for window resolutions leads to a crash. ...