Unreal Engine Issues
Unreal Engine Issues
Flickering / Color Shift in Right eye with Cascade Particle + Instanced Stereo
UE - Niagara - May 13, 2019Flickering or shifted color will be seen in the Right Eye. User reports that moving the nodes from the material function to the base graph resolves the issue. Confirmed in 4.23 MAIN branch @ CL 6 ...
incorrect virtual texture shader code(in FinalizeVirtualTextureFeedback) on Mobile forward platform
UE - Graphics Features - Mar 15, 2021in the function FinalizeVirtualTextureFeedback, the micro "USE_DBUFFER && MATERIALDECALRESPONSEMASK" returns true on mobile forward, while there is no DBUFFER on Mobile forward obviously. This takes ...
MoviePipeline: Can't inherit from UMoviePipelineSetting in BP due to PURE_VIRTUAL
zComponent - Archive - Oct 28, 2021IsValidOnMaster/IsValidOnShot need to be BlueprintNativeEvents with a default C++ implementation and allow derived classes to override the function. This is needed so that you can create custom set ...
UAssetDefinition doesn't allow overriding actions from base classes
UE - Editor - Jun 24, 2024In the new implementation UAssetDefinition to define the actions for asset we found that it isn't possible to delete or hide actions from parent classes due to the ToolMenu system works with delegat ...
ConditionalBeginDestroy on ActorComponent does not unregister the component with the world nor cause a warning
UE - Framework - Components - May 6, 2025Calling ConditionalBeginDestroy on an ActorComponent (instead of DestroyComponent) can lead to a crash due to the object not being correctly unregistered. BeginDestroy doesn't unregister tick funct ...
EnableGDT does not work correctly in PIE
UE - AI - Jul 13, 2015The console command "EnableGDT" will bring up the GDT menu, however no information will be updated. The screen gains the menus for GDT however no functionality seems to exist. Workaround: press ' ...
Mouse cursor appears outside of viewport while in PIE if UE4 and UDK are both open
Tools - Jan 15, 2015Mouse appears outside of viewport window when cursor is dragged off of editor window while UDK is open. This occurs even if UDk is minimized. Note: Cursor will appear outside of editor window but a ...
AHUD::DrawMaterialSimple does not render on ANdroid device when MobileHDR is disabled
UE - Platform - Mobile - Oct 23, 2015After cooking, If user installs same project which contains drawing material via DrawTile function in HUD, is not displayed in es2, with MobileHDR off (verified on android device) DrawTile script i ...
Clicking the yellow text while recording an animation in Persona no longer stops the recording
OLD - Anim - Oct 5, 2016No longer able to stop recording an animation by clicking the yellow text in the Persona viewport even though the tooltip when hovered over it states that you can. This is a regression from 4.13.2 ...
FString.Mid doesn't react appropriately when given negative values for the Count variable
UE - Foundation - Core - Jul 16, 2015If you use a 5 character string (hello) to call the Mid function and provide 0 for start, -1 for count, it'll give you the entire string. This should either return an assert or treat all negatives a ...