Unreal Engine Issues

Path Tracing - HDRIBackdrop contributing twice

The setup for HDRIBackdrop leads to double-counting of the illumination between the skydome and the geometry in the path tracer. ...

[Audio Analysis][Ensure] - Sound Submix Spectral Analyzer Delegate Throws Ensure when Analysis Started Before the Delegate is Added

Hit the following Ensure when trying to use the Spectrum Analyser. Also hit this in 4.26 so it doesn't appear to be a regression. Occurs with any of the following Band Settings or when creating you ...

Components attached to Camera doesn't receive late updates and "wobble"

Numpad + Shift does not release keystrokes

The combination of Numpad + Shift seems to have various problems. https://answers.unrealengine.com/questions/899468/what-is-the-issue-with-shift-num-key-combinations.html  Regression No, according ...

Travelling between two levels that share a sublevel will not update the positions of those actors in that sublevel

If you travel between two levels that both share the same sublevel then the actors within that shared sublevel will not update their positions regardless of their positions being saved at different ...

ListView does not update properly when game is paused

The ListView widget currently depends on the UWorld's timer manager to fire an event indicating new entries have been generated (see UListViewBase::FinishGeneratingEntry). This can become a problem ...

ETraceTypeQuery and EObjectTypeQuery not fully exposed to Python

The ETraceTypeQuery and EObjectTypeQuery enums declared in EngineTypes.h aren't fully exposed to Python. Both enums have 32 entries, but Python is only aware of the first 2 for ETraceTypeQuery and t ...

Implied Decal Blend Modes don't account for static ignore-switch parameters in an expected way

The desired behavior from a user perspective here is that they'd be able to use Static Switches in a decal master material to toggle different features and behaviors. In the above setup, if I set th ...

Implied Decal Blend Modes don't properly account for Material Attributes usage

I've attached a project with the necessary materials that demonstrate this issue. I would expect that just because a Set Material Attributes node is inside a material graph it wouldn't affect the de ...

[MetaSounds] - Browse to Asset button on Wave Player Node does not work

Selecting the Browse button on a Wave Player asset does not load the location of the selected asset for previously saved MetaSounds. Changing the Wave Asset to another Sound Wave and then selecting ...