Projects crashing on launch after converting from 4.7.3 to 4.7.4

UE - Gameplay - Blueprint - Apr 3, 2015

A couple users have reported a crash when opening their 4.7.3 project in 4.7.4. From MikeB:https://answers.unrealengine.com/questions/205043/473-to-474-project-crash-on-startup.html The guy is hit ...

UE 5.6 broke the Collaborative Viewer Template pawn's Mouse Look

UE - Content - Template - Aug 24, 2025

UE 5.6 broke the Collaborative Viewer Template pawn's Mouse Look. Creating a 5.6 project based on the Collaborative Viewer Template and Playing-In-Editor, we notice that the Mouse Look functionality ...

Geometry Collection's Chaos Cache Static Pose Scrubbing broken in 5.6 due to Custom Renderer GeometryCollectionRootProxyRenderer

UE - Simulation - Physics - Destruction - Aug 26, 2025

Geometry Collection's Chaos Cache Static Pose Scrubbing broken in 5.6 due to Custom Renderer GeometryCollectionRootProxyRenderer. The licensee has provided his analysis: In 5.6, when creating a Geo ...

A 5.5 level that contains a Text3DComponent in a BP crashes the engine when opened in 5.6 (and up)

UE - Virtual Production - Sep 11, 2025

A 5.5 level that contains a Text3DComponent in a BP crashes the engine when opened in 5.6 (and up). The licensee has provided his analysis: Description: Level instance created in UE5.5 and re-saved ...

Texture streaming and player input broken on iPhone 6 and 6+

UE - Platform - Mobile - Jun 30, 2016

Level streaming and player input seem to be broken on iPhone 6 and 6+ This issue was observed during the recurring mobile smoke. ...

Some materials render black on Iphone 6 series phones

UE - Platform - Mobile - Oct 6, 2016

Some materials are not rendering on iphone 6 series devices. They will render completely black on one device but not others in the same series. Replacing the material with a basic material renders o ...

Post processing rendering artifacts Nexus 6

UE - Platform - Mobile - Dec 3, 2015

When you push a mobile targeted project to the Nexus 6, the rendering is all sorts of wrong. When you hover over to where the items are, the screen goes black. There is also a large black or cyan sp ...

FBX imports incorrect vertex normals in 4.7

UE - Graphics Features - Mar 2, 2015

Box reflection captures with some assets are not working correctly. The reflection capture is being tiled with version after 4.7 that were not in 4.6. Images are attached to demonstrate along with ...

Locale is not auto-detected correctly for French or German Windows 7

UE - Editor - UI Systems - Localization - Jun 30, 2016

Reports that a UE4 project launched on French or German Windows 7 is not automatically correctly setting the culture from the OS' setting. Can probably install French or German support for a copy o ...

Mutable custom versioning issue from 5.5->5.6

UE - Anim - Mutable - Sep 19, 2025

In 5.6, a handful of new entries in `FCustomizableObjectCustomVersion` were added, including `SetDisplayNamePropertyAsPinNameOfTableNodes`. Looking back at the history, `SetDisplayNamePropertyAsPinN ...