Unreal Engine Issues
Unreal Engine Issues
Regression: "Play particle effect" anim notifies are not seen in the editor playing level sequence/matinee when Attached is set to false
UE - Graphics Features - Dec 21, 2017Not Attached particle system is not seen in the viewport of the editor. This particle will be seen normally when PIE. Regression? Yes. This issue is not reproduced in 4.17 version. You can simply ...
Matinee movie recording is broken in 4.10
Tools - Dec 18, 2015When trying to record a movie from a matinee in 4.10, it can fail for a number of reasons: 1. The folder does not exist 2. The cinematic view modes do not take effect 3. Trying to record a streamin ...
Default values specified for local BP variables of type DateTime and Timespan don't actually work
UE - Gameplay - Blueprint Runtime - Nov 6, 2020Have attached examples of this in action, including breakpoints showing the FDateTime::Ticks count as zero. Also showed that this is an issue for the existing GetYear/GetMonth/GetDay methods (and an ...
Crash when selecting Perforce in Source Control dialog box
Tools - Jun 13, 2016Attempting to connect to perforce as the source control provider, the editor is crashing with listed callstack. ...
BP timelines: when converting internal curve to external, the external curve isn't used until BP is recompiled
UE - Gameplay - Blueprint Editor - Aug 28, 2023Blueprint timelines: when converting an internal curve to an external curve asset, the curve asset's data isn't used until the blueprint is recompiled. This is confusing as there is no indication th ...
Mac Editor crashes when deploying
UE - Audio - Apr 17, 2017This issue occurs NO MATTER your deployment type. (e.g. PIE, Launch, Package...) This is BLOCKING all deployment from the Mac platform. This is a regression and does not occur on Windows. ...
Tilemaps with masked materials respond to lighting at incorrect directions
UE - Gameplay - Paper2D - Nov 19, 2018Tilemaps using lit methods of rendering are subject to strange lighting behavior. If the material for the tilemap is using a 'masked' method of rendering. Lighting will appear at incorrect angles. ...
[AI] WP Dynamic navmesh fails to rebuild tiles with actors that are loaded but not part of the base navmesh.
UE - AI - Navigation - Feb 18, 2025WP dynamic navmesh does not properly react to actors or navigation modifiers that are loaded in areas that the navmesh has not yet streamed into. Although the actors/modifiers are not part of the ba ...
Placing 'Groom' asset into scene results in assertion failed
UE - Graphics Features - Feb 10, 2020Dragging a groom asset into the level results in a crash. Link to Project: [Link Removed] Tested in: 4.25 CL#11223911 ...
Memory leak when Lumen is disabled but r.MeshCardRepresentation=1
UE - Graphics Features - Lumen - Jul 29, 2024When Lumen is disabled, but the cvar "r.MeshCardRepresentation" is set to 1, Lumen will continuously enqueue object removal from the Lumen Scene, without ever emptying the array of primitives to rem ...