Significant editor slowdowns when moving blueprinted actors while having a different complex blueprint open

UE - Framework - Blueprint Editor - Jun 7, 2021

A Blueprinted actor's construction script time can be affected by the complexity of an opened level Blueprint. ...

Quest: Web browser widget does not render

UE - Platform - XR - Jan 21, 2021

This DOES NOT work with ANDROID ES 3.1 This DOES work with ANDROID Vulkan So this SHOULD work with Quest Vulkan ...

Documentation button redirects to 404 error page in Match3

UE - Platform - Mobile - Aug 23, 2016

The documentation button does not redirect to the correct documentation page. Tested on iPhone6S_6240 OS: 9.3.4 ...

Background blur missing with HDR CompositeMode 1

UE - Graphics Features - Jul 29, 2021

UPD: According to Affects Version field, issue reproduces in 4.26, Regression for 4.27 - No. ...

ToString() from a StringTable entry now returns <MISSING STRING TABLE ENTRY>

UE - Editor - UI Systems - Localization - Apr 10, 2024

This is a regression from 5.3 that has been fixed in Main (32476819, for 5.5), but needs merging into 5.4. ...

All Megascan asset libraries are missing

TM - Core - Oct 15, 2025

All Megascans assets no longer appear in Twinmotion 2025.2 hotfix (46767548). Other libraries do not appear to be affected. ...

Lighting behavior is unreliable for translucent lit materials, results are inconsistent depending on the editor camera's FOV and the editor viewport's width/height/aspect

UE - Rendering - Architecture - Oct 27, 2024

When working on the level editor viewport or testing on PIE, the visual appearance of additive/translucent lit materials changes significantly (and abruptly) when varying the camera FOV or the viewp ...

Float Curve evaluation may yield completely wrong results due to floating-point precision issue

UE - Runtime - Animation - Oct 31, 2024

Note: This is possibly related to [Link Removed] To Do . For some inputs, function UE::Curves::WeightedEvalForTwoKeys() ins ...

GearVR crash with material using Fresnel or WPO on Snadragon S7

UE - Platform - Mobile - May 19, 2016

Talking with ChrisB, this has been passed to Samsung and Qualcomm for investigation with the Signal 11 crash. This only affects the Snapdragon S7 devices. ...

ShooterGame clients are unable to see LAN Off servers in the browser

UE - Online - Jan 15, 2017

Mac is unable to host Mac or Windows clients in ShooterGame . The issue does not occur in: 4.14.3 - 3251583 ...