Unreal Engine Issues
Unreal Engine Issues
[CrashReport][Assert] UnrealEditor-RHI!FRHIResource::MarkForDelete() [Engine/Source/Runtime/RHI/Private/RHIResources.cpp:49]
UE - Rendering - Architecture - Materials - Dec 18, 2024One of the users described this issue as below. "At seemingly random times while working in the material graph, some action will cause a hitch or freeze, and quickly after the engine will crash, an ...
Absolute World Position post process no longer works in mobile preview
UE - Platform - Mobile - Sep 2, 2020User reports this work correctly in 4.24, but now no longer works as expected in 4.25.I don't have a clear CL just yet, marking unconfirmed. If you change the settings to use ES3.1 Preview and just ...
Editor crashes if opening a sublevel containing a navmesh when persistent level is open
UE - AI - Sep 8, 2015If the persistent level is open and a user attempts to open a sublevel that contains a navmesh, the editor will freeze and then crash. Frequency: 3/3 Crashreporter: N/A ...
[CrashReport] Fatal error: Couldn't find shader - FMaterial::GetShader()
UE - Graphics Features - Jul 20, 2017This is a common crash affecting users in 4.16. User DescriptionsTried to edit the VivePreController Meshtried to edit SM_Skysphere after shaders had finished compiling. For no other reason than th ...
OpenXR: per-frame Color/Depth mismatch caused by unsynchronized swapchain image selection across Game/Render/RHI threads (default xr.OpenXRAcquireMode=2)
UE - Platform - XR - Jul 29, 2026Reported via UDN (case No107). Verified against //UE5/Release-5.6 sources; same code present in 5.5, 5.7, 5.8 and Main. Licensee reproduces on 5.3 and 5.6 with the Canon MREAL runtime. Symptom Fra ...
Editor crashes while switching to paint mode if material has a grass output and landscape visibility mask
UE - LD & Modeling - Terrain - Landscape - Aug 10, 2016Editor crashes while switching to paint mode if material has a grass output and landscape visibility mask. Frequency: 3/3 ...
mobile DOF setting is not applied when play on standalone mode
UE - Platform - Mobile - Systems - Feb 20, 2023In 5.0, the mobile depth of field settings were correctly reflected when running standalone. However, in 5.1, the DOF doesn't appear to be working correctly and the focus is off, causing a blurry im ...
LIVE: RENDERING: Precomputed Visibility volume is not registering Statically Occluded Primitives nor allowing visibility cells to be rendered
UE - Graphics Features - Jul 3, 2014Build: 4.2.1-2101290 Description: Currently, precomputed visibility volumes do not seem to alter occluded primitives, nor do they show visibility cells when r.ShowPrecomputedVisibilityCells 1 is en ...
[CrashReport] Ensure - UE4Editor_Renderer!FPlanarReflectionParameters::SetParameters() [planarreflectionrendering.cpp:704]
UE - Graphics Features - Apr 4, 2018No user comments in crash group. Similar callstack in [Link Removed] but that is a crash and this is an ensure. 701 if (ReflectionSceneProxy && ReflectionSceneProxy->RenderTarget) 702 ...
The VertexInterpolator connected to a Normalize node, input into BaseColor results in black Mesh LOD Coloration
UE - Rendering - Architecture - Materials - Nov 16, 2021It does not appear to matter to the repro steps what is input to the VertexInterpolator, it matters more that there is a Normalize between the VertexInterpolator and the base color input of the mate ...