SunTemple fails to open on some Android devices.

UE - Platform - Mobile - Jan 16, 2017

This is occurring on device 2888_KindleFireHD8.9" This is a regression from 4.14 ...

Media textures are over saturated on ES31

UE - Platform - Mobile - Apr 4, 2018

This looks like the same issue as [Link Removed], but for ES31 (that was originally reported on ES2 and likely ES31 was not tested) So far this has only been tested on Android. It didn't occur on ...

There is no indication that CreateDefaultSubobject will not work from within a Component/Nested subobject

UE - Framework - Components - Aug 16, 2022

We should at least update the comments on the CreateDefaultSubobject function warning people about the troubles and weird behavior that could occur when you call it from within a nested subobject  ...

Character Jitters at High Speed When Run Dedicated Server is Enabled

UE - Networking - May 15, 2017

Characters are jittering in multiplayer when moving at high speeds when Run Dedicated Server is enabled. ...

Virtual Texture Data GetNumMips reports one fewer mip than expected

UE - Graphics Features - Feb 27, 2025

FVirtualTextureBuiltData::GetNumMips() can return 1 fewer mip than it should due to a potential clamping issue at the end of FVirtualTextureBuilderDerivedInfo::InitializeFromBuildSettings() where it ...

stat scenerendering not visible on mobile with VR Canvas

UE - Platform - XR - Oct 15, 2018

stat scenerendering not visible on Mobile VR with new VR Canvas Layer. Similar debug output are visible (Tested stat memory, stat rhi)  Confirmed in Main @ CL 4468496 ...

Creating Anim Montage drops a frame(s)

UE - Anim - Gameplay - Dec 13, 2018

When creating an animation montage, it appears that frames can be lost. ...

The ConstructionScript not being called on drag

Tools - May 2, 2019

The construction script for a custom actor blueprint does not execute after drag when the scene component is selected. Tested in 4.21.2 (CL - 5660361), 4.22.1 (CL - 6063286), 4.23 (CL - 6248266) ...

Match3 crashes on device after locking and unlocking the screen on iOS

Tools - Aug 23, 2016

Aug 23 15:25:15 A6240 UnrealMatch3[987] <Warning>: Assertion failed: CommandEncoder.IsRenderPassDescriptorValid() [Link Removed] [Line: 700] Match3 does not resume after locking and unlocking the s ...