Niagara - When Interpolated Spawning is disabled, the first frame of each particle unexpectedly does not take into account the Particle Update stage

UE - Niagara - Feb 28, 2025

Foreword: Even if the behavior described here is by design, it is rarely (if ever) expected or desired. This was discussed and agreed to be treated as a bug. Explanation below. When interpolated sp ...

Placing a second landscape spline component crashes editor

UE - LD & Modeling - Terrain - Landscape - Apr 8, 2015

Placing multiple spline components crashes editor. Crash Reporter: [Link Removed] Frequency: 3/3 ...

IKRetargeter Export Selected Animations Saves Exported Animations Even When Cancelled

UE - CAPT - Control Rig - May 3, 2022

Occurs 3/3 times When 'Export Selected Animations' button is clicked and then canceled, animations continue to be saved.  ...

Base Pose Type Not Retained When Retargeting Animation with Additive Anim Type

zComponent - Archive - Apr 22, 2022

Occurs 3/3 Times Base pose animation is not retained when retargeting animation with an additive anim type. ...

Unable to select Paper2D Actors with Translucent Material in Viewport

UE - LD & Modeling - Modeling Tools - Mesh Editing - Aug 20, 2020

Unable to select Paper2D Actors with Translucent Material in the Viewport in version 4.25.3. Reported in version 4.25.3(CL 13942748). Tested in versions 4.24.3(CL 11590370) and 4.25.3. Issue does n ...

Adding material to tiled landscape via details pane causes editor to crash

UE - LD & Modeling - Terrain - Landscape - Jun 22, 2015

If a material is added to a tiled landscape via the details pane, the editor crashes. Frequency: 3/3 CrashReporter: [Link Removed] ...

Moving folder does not bring along maps

UE - Editor - Content Pipeline - Content Browser - Jan 30, 2015

Moving a folder in the content browser does not bring along any maps contained in the folder. FREQUENCY: 3/3 WORKAROUND: Manually move maps ...

Simulated actors collide with (but don't touch) kinematic actors.

UE - Simulation - Physics - Aug 30, 2016

Found this while working on [Link Removed] in the Dev-Physics-Upgrade branch (from 3.3 to 3.4). ...

Media Player not updating when IMG Media Source files are changed

Media Framework - Aug 20, 2020

Images in a sequence path for an Img Media Source are not updating without restarting the project. Changing the path itself appears to work as expected.  Tested in versions 4.22.3(CL 7053642), 4. ...

Custom iOS icons don't appear using BP projects [4.18.2]

UE - Platform - Mobile - Dec 14, 2017

So far this has been tested on Mac deploying SunTemple to an iPhone 7 (10.3.3). It occurred with both Launch On and File Package. This does not occur when deploying StrategyGame from the same Mac t ...