Unreal Engine Issues
Unreal Engine Issues
FUniqueNetIdRepl::NetSerialize() crashes when embedded in a TArray() of structs.
UE - Networking - Jun 29, 2020Calling the NetSerialize() function of FUniqueNetIdRepl from a custom NetSerialize() causes a crash. This only seems to occur when the struct is part of an array RPC parameter. ...
Send "Enter Key" is not working with press and release key in Web Browser plugin
Tools - Mar 3, 2020When trying to send the Enter Key to Web Browser using the Press and Release function, it does not work. This function works with any other key that you try to send. A repro project is attached tha ...
PressMethod is not called in UButton::RebuildWidget()
UE - Editor - UI Systems - Slate - Nov 5, 2018The void function UButton::RebuildWidget() does not call PressMethod when rebuilding the widget. Tested 4.19.2 (CL- 4033788), 4.20.3 (CL - 4369336), 4.21 (CL - 4537669), 4.22 (CL - 4531805) ...
Modulate Shadows shadow overlap not blended
UE - Platform - Mobile - Oct 15, 2015When using modulated shadows turned on for the directional stationary light in your mobile project, the movable objects shadows will not be blended. Image attached to illustrate the inconsistency. ...
Crash occurs when RayTracing.ExcludeDecals is enabled
UE - Graphics Features - Lumen - Sep 16, 2020The cause of the crash is out-of-range access to the array. ExcludeDecals eliminates the mesh instance to which the decal material is assigned, but it seems that the MeshCommand has been registered ...
Regression for changes in code character movement not affecting multiplayers
UE - Foundation - Core - Jun 26, 2015If MoveForward() function is changed to affect the speed of the player, when playing in a multiplayer game player 1 will be affected by the change but player 2 will not be. This is a regression - i ...
USourceControlHelpers::IsEnabled crashes shipping builds
UE - Editor - Workflow Systems - Aug 11, 2025The licensee has reported that the naming of the IsEnabled node is not descriptive enough and can be easily confused with other IsEnabled functions or variables. The Licensee has requested that the ...
Blueprint class's property is overridden by parent blueprint class
UE - Gameplay - Components - Nov 2, 2020I did some research. The problem is caused in CoreNative.cpp. In Function GetInstancedSubobject (Line 126) We should check if instance is runtime instance first. If it is runtime instance, just us ...
Incorrect data type in FDumpFPSChartToEndpoint::DumpChart()
UE - Foundation - Core - Jul 11, 2019The TotalTime variable in the FDumpFPSChartToEndpoint::DumpChart() function has recently been changed to int32 when it should be double. Tested in 4.21.2 (CL - 4753647), 4.22.3 (CL - 7053647), 4.23 ...
Generating Lightmap UVs doesn't automaticly switch LightMapCoord Index
Tools - Jul 17, 2015When Import a meshes then open the staticmesh editor and turn on the "Generate Lightmap UVs" in the Build Settings. Then hit apply button to genereate the Lightmaps. It will generate the Lightmap bu ...