Scroll Bars for Certain Editor Windows are Reversed when using Trackpad on Mac

UE - Platform - Apple - Mar 25, 2015

Certain scroll bars within the Editor while on a Mac have their directions reversed. i.e. The 'World Outliner', the 'Details' panel within a 'Blueprint.' The suggested workaround I gave to the user ...

Crash When Assigning a Static Mesh to the "Sample Static Mesh" Module

UE - Niagara - Jun 28, 2018

When assigning a static mesh to the "Sample Static Mesh" module, the engine will crash as soon as you select a mesh and click "Fix Now". If the mesh already has CPU access enabled it will crash as s ...

Edits of node properties that are not stored on pins do not diff correctly

UE - Gameplay - Blueprint Editor - Oct 2, 2015

Currently details changes to the following are not noticed by the Diff tool when diffing AnimBPs:State Machines (i.e. Max transitions per frame)Transition rulesConduitsStates This also affects non- ...

CA_VALID_POINTER and CA_CHECK_RETVAL static analysis annotations broken

UE - CoreTech - Oct 13, 2023

We had some code using the CA_VALID_POINTER and CA_CHECK_RETVAL annotations which had been working fine up until the 5.3 engine release. In 5.3, we started getting the following compile errors in a ...

Crash on startup with a Blueprint deriving from an abstract class with a SpriteComponent

Tools - Feb 7, 2018

Appears to be an issue with load order and the timing of when we populate the 'ShowSpriteCommands' and 'SpriteIDToIndexMap' containers, which we assert on if they're not the same size. The original ...

Imported FBX causes a crash

Tools - Apr 22, 2016

Edit MattK: This seems like more of a cooking issue than an fbx issue. The crash is related to nav collision When adding a FBX import into your project, if you do not close the project out and ope ...

Canceling the Color Picker while modifying Curve Editor colors Moves Transforms Curves

If the user presses 'Cancel' when modifying colors using the Color Picker within the Curve Editor, the curves points are all transformed. Issue is reproducible in the below engine versions: 4.8.3 - ...

Execution reroute nodes become wildcard reroute nodes when creating a second reroute node off the same execution pin

UE - Gameplay - Blueprint - Sep 21, 2015

Execution reroute nodes become wildcard reroute nodes when creating a second reroute node off the same execution pin. Note: this does not appear to affect their functionality as execution reroute no ...

MetaSounds isn't working with Modular Game Features - LogMetaSound: Error: Target interface is not registered

Audio-Gameplay-Engineering - Nov 22, 2022

Reproduced 3/3 times. Issue also occurs in //UE5/Release-5.0 - CL 20979098 Binary. Confirmed NOT a Regression. Errors:[2022.11.22-18.11.28:472][  0]LogMetaSound: Error: Target interface is not regi ...

Engine crashes when trying to copy a setter node for a GameplayTag variable from one eventgraph to another eventgraph

UE - Gameplay - Sep 27, 2019

When trying to copy a setter node for a GameplayTag variable from one eventgraph to another eventgraph the engine crashes. If the blueprint that is copied into has a GameplayTag variable with the sa ...