Unreal Engine Issues
Unreal Engine Issues
Water tiles flicker in and out of visibility with instanced stereo enabled.
UE - Graphics Features - Jun 16, 2025Water tiles flicker in and out of visibility when playing in VR with instanced stereo enabled. Requires instanced stereo rendering to be enabled (does not require forward shading to be enabled) Must ...
Adding to Struct causes 'Inappropriate Outermost' warnings
UE - Gameplay - Blueprint - Jun 2, 2015Adding to Struct causes 'Inappropriate Outermost' warnings to be spammed to the Output Log ...
If PIE is paused using the 'Pause key', the Pause or Resume buttons on the toolbar will no longer start PIE
Tools - Feb 5, 2015If PIE is paused using the 'Pause key', the Pause or Resume buttons on the toolbar will no longer start PIE. You have to make sure that the icon is toggled to Pause, select the viewport, and then p ...
Changing code based component category causes component to become ineditable in blueprints
UE - Gameplay - Blueprint - Mar 27, 2015When a component written in code has it's category setting changed in blueprint the rest of the details for that component will not be editable once the component is deselected and reselected. ...
Random Number Generated in Constructor Returning Different Value on Begin Play
UE - Gameplay - Jan 13, 2016When generating a random number using FMath::RandHelper() in the constructor of an actor, attempting to print that same number on BeginPlay returns a different value than the constructor. However, ...
D3D validation error about resources being deleted while in use
UE - Rendering Architecture - RHI - Jun 7, 2022We believe this is a bug in the D3D validation layer, rather than an actual error in our code. We're in touch with Microsoft about it, but I'll make this ticket to track the progress of that investi ...
[MetaSounds] - Trigger inputs called by Execute Trigger Parameter refire on MetaSounds that become active after virtualization
UE - Audio - MetaSounds - Aug 31, 2023If trigger execute is called in Blueprint, it will fire every time the sound recovers from being virtual, even if it has not been called again. See video example: [Link Removed] Also occurs in Re ...
Physical materials cannot be queried
UE - Rendering Architecture - Materials - Feb 12, 2015Physical materials placed on starter content shapes always return as invalid for any trace or collision query. ...
Changes in Scale are not replicated on the Client through RPCs
UE - Networking - Apr 27, 2015Changes in Scale are not replicated on the Client through RPCs. Location and Rotation are replicated as expected. Reproduced in 4.7.6 binary and Main (//depot/UE4/Promotable-CL-2522625) ...
Adding Multiple Scene Components to an Actor Causes Parenting Errors
UE - Gameplay - Components - Jan 5, 2016Attempting to add multiple instances of a Scene Component that was created in code and contains a component such as a Box Collider causes the Box Colliders of each Scene Component to be parented to ...