Unreal Engine Issues
Unreal Engine Issues
Blueprint Implementable Events and Event dispatchers with the same name break the event dispatcher.
UE - Gameplay - Blueprint - Sep 22, 2015Creating an event dispatcher and BlueprintImplementableEvent function with the same names causes a signature conflict inside the blueprint. The event dispatcher is then broken as it cannot be delet ...
Emissive for Static Lighting discarded upon Re-opening Level or Restarting Project
UE - Graphics Features - May 24, 2016'Emissive for Static Lighting' discarded when restarting or re-opening a project. I discovered this issue while testing [Link Removed]. This issue does not occur in the binary 4.11 release so I hav ...
Using FObjectFinder outside of the constructor causes crash
UE - Foundation - Core - May 19, 2015If FObjectFinder is used in a function other than the constructor, which should not be done, it causes a crash. ...
A static object using 'Complex as simple' collision will not collide with a dynamic object that is simulating physics
UE - Simulation - Physics - May 20, 2015If a static object has 'Use Complex collision as simple' set as its collision type, it'll collide with a player but will not collide with objects that are dynamically simulating physics. ...
Print String node will stop printing to the screen if PIE is exited while Gameplay Debugger is active
UE - Gameplay - Feb 15, 2017Print String node will stop printing to the screen if PIE is exited while Gameplay Debugger is active. Restarting the editor fixes the issue. ...
Landscape renders default material if apply another material instance under ES31 preview
UE - LD & Modeling - Terrain - Landscape - Aug 27, 2019In ES3.1 preview, Landscape will render default material if change landscape material by using material instance of landscape's material. Will render correct if using another material's instance ...
Applying Reverb does not work in Audio Volume
UE - Audio - Oct 29, 2019In current and future versions of the engine, the reverb does not work as intended in the Audio Volume Tested in 4.22.3 (CL - 7043647), 4.23.1 (CL - 9631420), 4.24 (CL - 9846303), 4.25 (CL - 98464 ...
MoviePipeline: Panoramic Renders don't work
UE - Anim - Sequencer - MRQ - Nov 10, 2022Images aren't just under exposed, they have values of 0.0 even in exrs - enabling the Debug Settings and writing out all samples shows the GPU is actually rendering black. ...
[Audio][Niagara] - Audio Spectrum only reacts to Channel 0, despite setting to another channel
UE - Audio - Submixes - Jun 6, 2023While doing some extra testing of the Submix Analyser fixes, I noticed there is a setting to set the channel of the submix to give the analyser. It always works for channel 0, but changing it to any ...
Crash when using CastChecked<>(nullptr, ECastCheckedType::NullAllowed) in configurations where checks are disabled
UE - CoreTech - Jun 19, 2025When using CastChecked<>(), the second parameter can be passed as ECastCheckedType::NullAllowed to make the check succeed when the input is nullptr. However, in UE 5.5 up to the latest engine versio ...