Unreal Engine Issues
Unreal Engine Issues
On Drop appears to cause update issues with widgets that are affected On Drag Enter
UE - Editor - UI Systems - Jan 3, 2017On Drop appears to cause update issues with widgets that are affected On Drag Enter. In this example the widget only changes colors if a delay is placed in the On Drop function. The On Drop function ...
Crash after clicking the Build button on Linux
UE - Platform - Linux - Sep 17, 2019This crash is a regression from 4.22.3 (CL-7053642). If lighting is built by selecting "Build Lighting Only" the Editor will not crash. This does not reproduce on Windows with -vulkan. This was rep ...
Two-Sided Shadowing on Planes and Landscapes with non-flat Normals are Incorrectly Lit
UE - Graphics Features - Dec 17, 2015When using a Two-Sided Material and Shadowing Two-Sided for a Plane or Landscape, with non-flat normals, there are parts of the material which are still illuminated. I have provided a test project ...
Renaming Native Blueprint Interface category in Blueprint derived class causes crash
UE - Gameplay - Blueprint - Aug 22, 2016Renaming a function category from a Interface class which a class inherits from causes crash. ...
FOculusRiftHMD::EnablePositionalTracking() may be missing a call to UpdateHmdCaps()
UE - Platform - XR - Feb 26, 2015A user reported that the FOculusRiftHMD::EnablePositionalTracking() function is missing a call to UpdateHmdCaps() so that the status of the HMD is correctly updated. The user's suggestion for this ...
The collision is wrong when the static mesh scale is set as negative value
UE - Simulation - Physics - Feb 15, 2022I checked the c.haos code quickly. I think it caused by the function "bool FInitBodiesHelperBase::CreateShapesAndActors()". In this function, the CreateActor_AssumesLocked function will ignore the s ...
Adding pin to CR node causes crash if input variable is assigned to one of the array element
UE - Anim - Rigging - Control Rig - Aug 22, 2025When a node has a variable assigned to one of its pins. You will get a crash every time you add a pin. I am sure this goes for all nodes with with the "add pin" functionality [Link Removed] ...
Project fails to compile if UFUNCTION parameter shares a name with a previously defined UPROPERTY variable
UE - Foundation - Core - Feb 29, 2016If the name of a UFUNCTION parameter matches the name of a previously defined UPROPERTY variable, the project will fail compile due to the following reason: Function parameter: '[Variable/Paramter ...
Cannot Set the Arrow Component Size Correctly within Construction Script as Actor Blueprint
UE - Gameplay - Blueprint - May 19, 2015Setting the arrow size of an added arrow component via the Construction Script, does not update unless the 'Set Arrow Size' is plugged into the 'Set Arrow Color' function. The expected outcome woul ...
ALight::Destroyed() doesn't call Super::Destroyed()
UE - Gameplay - Feb 25, 2016A licensee mentioned that If you see ALight::Destroyed() in Engine\Source\Runtime\Engine\Private\Light.cpp, you can see Super::Destroyed() is't called in the function. ...