Unreal Engine Issues
Unreal Engine Issues
Niagara - The "Apply" button on the toolbar does not get enabled when changing the checked state of an entry in "Propagated Static Switch Values" for a function call node.
UE - Rendering - Architecture - Niagara - Apr 7, 2025Consider a Niagara Function Script containing a Static Switch node with the "Expose as Pin" option disabled for its selector variable. Now consider another Niagara Function Script or Module Script ...
Niagara - When a Static Switch is used inside a Niagara Function Script with "expose as pin" disabled, its Selector variable is exposed as an input on function call nodes. However, this input incorrectly loses its "static" type.
UE - Rendering - Architecture - Niagara - Apr 7, 2025Consider a Niagara Function Script containing a Static Switch node with the "Expose as Pin" option disabled for its selector variable. When the function is called by another Niagara Function or Niag ...
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 ...
Editor is crashing on Startup after opening a copy of older project
UE - Foundation - Core - Jan 16, 2015Edit: Looks like failing to read the DDC when compiling global shaders User is getting a crash when they are attempting to open a copy of their project from version 4.4.3. Attached CrashLogs, DXd ...
Custom lighting channels ignored when object culled in stereoscopic
UE - Platform - XR - Apr 14, 2016When a light that uses lighting channels is only visible in one view during stereoscopic rendering, it affects the default light channel instead of the assigned one in the view that it's not visible ...
Low FPS in Kite Demo
Tools - Mar 9, 2017When attempting to play the GDC_Landscape_01 map in Editor or as Standalone Game, game plays with very low FPS ~ 3-10 on machines that should be able to handle 30+. While testing for regression, ra ...
Mesh vanishes on BP compile (components created by components issue)
UE - Gameplay - Blueprint - Mar 29, 2017When a mesh is declared in a custom component class and that component is added to an actor class, compiling a blueprint based on the actor class will cause the mesh set in the component to vanish i ...
On mouse Down not firing for left click on Button widgets when using precise click
UE - Editor - UI Systems - Aug 31, 2017When using the left mouse button to click and drag a button, the on drag detected will not fire even when using precise click. This was not the case in previous versions of the engine (Works as expe ...
[CrashReport] UE4Editor_RHI!FClearValueBinding::GetClearColor() [rhi.h:989]
UE - Platform - XR - Mar 27, 2018No user comments in crash group 986 FLinearColor GetClearColor() const 987 { 988 ***** ensure(ColorBinding == EClearBinding::EColorBound); 989 return FLinearColor(V ...
World Aligned Texture / Normal in Decals does not Operate as Expected
UE - Graphics Features - Jun 26, 2018World Aligned Texture / Normal in Decals does not operate as expected, however when used as a surface material it will work just fine. Found in 4.19 CL# 4033788, 4.20 Preview 3 CL# 4154964, 4.21 CL ...