Unreal Engine Issues
Unreal Engine Issues
Nanite displacement on landscapes not rendering on 5700XT
UE - Graphics Features - Nanite - Mar 27, 2024This only happens on a 5700XT, tested this on the 7900XT and the issue did not occur Initially reported on the Preview 1 forums: https://forums.unrealengine.com/t/unreal-engine-5-4-preview/1763516 ...
MATERIAL_SHADINGMODEL_TOON macro is not propagated to the substrate tool BSDF material on a DDC hit
UE - Rendering - Features - Shading Models - Jul 27, 2026On a DDC hit, the SubstrateMaterialBsdfFeatures variable restored into MaterialCompilationOutput is not copied into SubstrateTranslatorData.SubstrateMaterialBsdfFeatures, which is referenced by the ...
Crash in FLandscapeRenderSystem on Mobile
UE - Graphics Tools - Terrain - Landscape - Aug 4, 2021Similar issues have already been reported here for iOS [https://udn.unrealengine.com/s/question/0D52L00004vJelTSAS/crash-ios-in-flandscaperendersystemcomputesectionperviewparameters] and here [https ...
Inconsistent mobility when converting selected actors to a blueprint
UE - Gameplay - Blueprint - Jan 6, 2015Noticed when replying to a user on the forums (link included) When using the "Convert to Class Blueprint" feature in the level editor to create a blueprint from the selected actors, the created blu ...
Smoothing landscape removes landscape collision in smoothed areas
UE - LD & Modeling - Terrain - Landscape - Apr 27, 2016Smoothing user's landscape breaks collision, causing player to fall through the ground at points that have been smoothed. Resampling landscape fixes the error until smooth tool is used again. Regr ...
Right side of viewport renders black in stereoscopic
UE - Graphics Features - Jan 19, 2017When in VR preview the right eye is solid black. This has been reproduced on multiple machines using both the Oculus and HTC Vive. The same effect is also achieved when running -emulatestereo – ...
[Input] Switching levels destroys auto-created Input Component which breaks emitUIInteraction
PixelStreaming - Feb 12, 2019We auto-create a PixelStreamingInputComponent which handles the input coming from JavaScript's emitUIInteraction. This works in a UE4 app with a single level, but it seems that if you change levels ...
add_possessable doesn't work for all objects
UE - Anim - Sequencer - Jun 17, 2019Using following code in Python: seq.add_possessable(seq.add_spawnable_from_class(unreal.CineCameraActor).get_object_template().camera_component) doesn't create a camera component track in sequen ...
Replay System throws an Ensure during demoplay when calling it in a different Level
UE - Networking - Jul 10, 2019Replay System throws an Ensure during demoplay when calling it in a different Level. The error is thrown at Source\Runtime\Engine\Private\RepLayout.cpp]. It does not prevent the Replay from being pl ...
Level sequencer's play to(second) function not working as expected
UE - Anim - Sequencer - Aug 22, 2019The function Play to(seconds) does not functions as it's tooltip implies. "Play the sequence from the current time, to the specified time in seconds". The function instead snaps to the specified tim ...