Unreal Engine Issues

Audio device hot swap fails for extreme audio device ranges

[CrashReport] Linux crash - FVulkanCommandBufferManager::WaitForCmdBuffer

This is a semi-common Linux crash coming out of 4.17.1. It is spread among a few different similar callstack affecting a handful of users. [Link Removed] [Link Removed] [Link Removed] [Link Removed ...

Editor crashes when building a level containing landscape if Preview Rendering settings are set to Default High End Mobile.

Editor crashes when building a level containing landscape if Preview Rendering settings are set to Default High End Mobile. This is a regression. This is working on 4.16 3-3561208 This is not wor ...

Function boolean return nodes often set to true will default to false once saved project is closed/reopened

The new function output booleans within blueprint class actors are not saving intended true/false entries. This issue is a regression. Works in: 4.16.3-3561208 Does not work in: 4.17.1-3586342 and ...

ARCore failing to package

Users reporting packaging issues with ARCore plugin enabled in 4.18 preview #1 and #2: https://answers.unrealengine.com/questions/709840/418-android-packaging-fails-with-arcore-plugin-ena.html ...

Adding Instances to a Hierarchical Instanced Static Mesh causes crash

Adding Instances to the Hierarchical Instanced Static Mesh Component on BeginPlay causes the Editor to crash. Tested in 4.19.2 (CL - 4033788), 4.20.1 (CL - 4229980), 4.21(CL - 4235929) ...

UActorFactory::PostSpawnActor gets called twice when an actor blueprint class is dragged into the scene

Whenever dragging and dropping an actor to the Scene, the function UActorFactory:: PostSpawnActor gets called twice. Tested in 4.20.3 (CL - 4433814), 4.21.1 (CL - 4705082), 4.22 (CL - 4708082) ...

Python commandlet crashes when spawning actors in a level

Using the python commandlet to spawn actors within a Map and then saving it causes a crash in the commandline. Tested in 4.21.2 (CL - 4753647), 4.22.1 (CL - 6063286),  4.23 (CL - 6338849) ...

Spawned Actors do not appear in World Outliner

Spawning actors from a Blueprint via the SpawnActorFromClass function at runtime does not cause the World Outliner to update. Tested in 4.21.2 (CL - 4753647), 4.22.1 (CL - 6063286), 4.23 (CL - 64 ...

Draw to Render Target Android Regression

Regression in Draw Material to Render Target functionality. Enabling Mobile HDR is a workaround. Android tested with Note 4 Unable to verify Main CL 6395234 (Crash on Phone) No repro on iOS mo ...