Unreal Engine Issues
Unreal Engine Issues
Changing blueprint default values inside arrays only updates loaded child blueprints
UE - CoreTech - Jul 30, 2020The rules for delta serialization in UE4 are complicated, and the editor tries to hide them from you, which works 90% of the time but can lead to confusion and data loss in other situations. In the ...
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, 2025Foreword: 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, 2015Placing multiple spline components crashes editor. Crash Reporter: [Link Removed] Frequency: 3/3 ...
IKRetargeter Export Selected Animations Saves Exported Animations Even When Cancelled
UE - Anim - Rigging - May 3, 2022Occurs 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
UE - Anim - Rigging - Retargeting - Apr 22, 2022Occurs 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, 2020Unable 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, 2015If 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, 2015Moving 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, 2016Found 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, 2020Images 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. ...