Unreal Engine Issues
Unreal Engine Issues
[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 ...
VALIDATE_UNIFORM_BUFFER_LIFETIME fails compilation
UE - Graphics Features - Jul 24, 2025Also verified on Release-5.5.4 CL 40574608 ...
Distance Field Artifact with Point/Spot Lights with Mesh scaled to 0 on XYZ
UE - Graphics Features - Apr 30, 2015When using a Spot/Point Light with Distance Fields enabled and a mesh that is scaled to 0 on the XYZ will result in artifacts. ...
Pausing simulation in PIE does not pause looped timers on the Server when players is set to more than 1
UE - Networking - Feb 4, 2016Pausing simulation in PIE does not pause looped timers on the Server when players is set to more than 1. The Client pauses the timer as expected. With only one player, timers are paused as expected. ...
Auto Align Floor to Mesh causes floor to align well below the mesh
OLD - Anim - Aug 28, 2015NOTE: This is likely a known issue, but I could not find an existing bug for tracking Auto Align Floor to Mesh causes floor to align well below the mesh. Causes the mesh to float I've tried with ...
"Set Anim Instance Class" broken after using "Play Animation" node
OLD - Anim - Jul 17, 2015After using a "Play Animation", the user cannot set the character back to using an AnimBP via the "Set Anim Instance Class" node. Workaround: Use two "Set Anim Instance Class" nodes. One to set i ...
Inputs and Outputs missing in Details pane on Interface function that has been transferred to local function
UE - Gameplay - Blueprint - Aug 12, 2015After removing an interface from a blueprint, any interface functions in the blueprint can be transferred to a local function. However, after this occurs, the inputs and outputs are removed from the ...
The Delay node cannot be added to the StandardMacros bp in the Engine folder
UE - Gameplay - Blueprint - Jan 19, 2015The Delay node cannot be added to the StandardMacros bp in the Engine folder. However, the Delay node can be added to a new Macro Library bp and any Macro in an actor class blueprint. ...
Get and Set nodes for variables from a BP's parent class will not compile without a reference to Self (4.8)
UE - Gameplay - Blueprint - Jan 20, 2015Get and Set nodes for variables from a BP's parent class will not compile without a reference to Self. Without one, the BP fails to compile with the following error: "Error Variable node Get NewVa ...