Unreal Engine Issues

No sound plays when using Built-In Spatialization or Simple ITD plugins

No audio can be heard when using the Built-In Spatialization plugin. This is a regression from 4.26. Occurs in 4.27 and 5.0. ...

Replay playback does not start at 0

Replays start playing before the player finishes loading into the level. From the player's point of view the replay starts playing 3 seconds into the replay instead of playing at 0 seconds. The pl ...

Crash when adding Rectangle Lights to a game with multiple players while Raytracing is enabled

A user reported this issue to us through Salesforce. They initially said it crashed with both Spot Lights and Rectangle Lights, but I was only able to repro with Rectangle lights. Additionally, I di ...

Layer blending not detecting compilation errors correctly when linked to material functions

This may be more of an error when detecting the input when layer blending is being used (as we've seen in other functions), rather than it necessarily being an error with the compilation of the stan ...

Ensure condition failed : Unprocessed LatentActions accumulate by SetPlaybackPostion using Play method

If some sequencer events are added to LatentAction queue while calling SetPlaybackPostion using Play method, the events will not be digested. So the LatentActions cause that ensure condition failed ...

Virtual Shadow map artefacts on sphere in template project

Editing parent emitters with mesh renderer in a niagara system causes crash

After editing the parent emitters of a Niagara system with mesh renderer particles the engine will crash the next time the editor and system are opened.  This was tested with both engine content cub ...

TransformVector WorldToTangent in Material editor seems to form incorrect HLSL

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 ...

Subobject delimiter replacement in ResolveName can cause previously valid strings to exceed NAME_SIZE

ResolveName will replace the subobject delimiter (colon) with two periods. This increases the length of the string, and can cause asserts due to the string exceeding NAME_SIZE even when the name was ...