World Origin Rebasing Causing Camera to be Offset From Location When Exiting PIE on a Large Map

UE - LD & Modeling - Terrain - Landscape - Jul 6, 2017

When using World Origin Rebasing, it is possible for the camera to offset itself from your starting location when exiting PIE. This will cause the next PIE session that starts at Current Camera Loca ...

A Blueprint created from Actors in the level does not preserve the relationship (hierarchy and transforms) of both components

UE - Gameplay - Blueprint - Aug 11, 2015

A Blueprint created from Actors in the level does not preserve the relationship (hierarchy and transforms) of both components. Reproduced in 4.8.3 binary, 4.9 Release (//depot/UE4-Releases/4.9/Prom ...

AI characters float above the ground only when in a packaged project

UE - Gameplay - Nov 4, 2014

The users AI characters will work correctly while in PIE & Standalone Mode but when in a packaged project they will float above the ground. This was working correctly for the user in 4.4.3 but the ...

Selecting and dragging multiple tracks on Sequence window combines the tracks to one row

UE - Anim - Sequencer - Sep 29, 2023

With plural shot tracks in different rows in the sequencer window, selecting these tracks and dragging one of them (but not the bottom one) left or right will merge the rows. Please check the attach ...

Using variations on the 'shot' console command closes iOS project on device

UE - Platform - Mobile - Jul 6, 2015

Using the console commands 'shot', 'highresshot 1' and 'highresshot 2' will crash to the 'recent apps' menu an ipa with Metal enabled. I tried this with 'Forward Rendering with Metal' disabled and u ...

Crash after network disconnection/pulling network cable

UE - Networking - Jul 11, 2019

A very unfortunate bug shipped in 4.22 that causes a crash in many cases when a client is disconnected from the network, such as when unplugging the network cable. This will be a cert failure on con ...

Landscape Layer Blend generates bad code for preview shader

UE - LD & Modeling - Terrain - Landscape - Sep 23, 2019

It breaks only when compiling the preview shader. Adding a preview weight to the Layer0 on the Layer Blend node fixes the problem. The source of the bug is in UMaterialExpressionLandscapeLayerBlend ...

Crash when entering Path Tracing view mode if r.Decal.NormalReprojectionEnabled true

UE - Graphics Features - Path Tracer - May 16, 2025

Cash when entering Path Tracing view mode if r.Decal.NormalReprojectionEnabled true The licensee has reported: This crash happens because the DeferredShadingRenderer tries to extract the normal GBu ...

Syncing changes in multi-user editing tool results in crash

UE - Virtual Production - Tools - Multi-user - Dec 18, 2019

When using the multi-user editing tool inside a 4.24 project, persisting changes will sometimes result in a crash.  Unable to reproduce the issue. However, the user has reported occasionally re ...

When changing the size of detail panel for animation state in Animation Blueprint diff tool, GetSelectedProfileName will occur crash

OLD - Anim - Jun 24, 2020

When trying to display BlendProfile property in Animation Blueprint diff tool, it will occur crash, because EditableSkeleton is null in SBlendProfilePicker::GetSelectedProfileName(). So, a followin ...