Unreal Engine Issues

Sequencer : Attaching a Possessable to multiple Spawnables across multiple cuts causes incorrect location restoration

Regression No, according to affects versions 4.27 and 4.27.1 The restore process proceeds in the following order : 1. Remove spawnable actor in first cut (no effect because the actor is already r ...

GPU Particle may blink when rendered in scene capture.

Reimporting an FBX causes invalid collision on Spline Mesh Components (Chaos)

Reported in UDN: [Link Removed] Reimporting a static mesh asset from an FBX file causes collision to disappear on spline meshes referencing the static mesh asset. In investigating this in 4.27, I ...

No sound plays when using Oculus Spatialization Plugin

The Oculus spatialization option is not producing sounds. In Test Rail I can see that the test related to this passed April 2021 in UE4. In UE5 it passed on Early Access in February 2021. ...

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 ...

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 ...

TransformVector WorldToTangent in Material editor seems to form incorrect HLSL

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 ...