Unreal Engine Issues
Unreal Engine Issues
r.MobileContentScaleFactor appears to be ignored defaulting to 1 on Mobile Devices
UE - Platform - Mobile - Feb 28, 2022r.MobileContentScaleFactor = 0 should return Native Resolution; 1 should return Standard definiton; 2 shold return an High Definition Resolution. It seems that r.MobileContentScaleFactor is being i ...
Blueprint diff tool does not highlight differences when a change is made to a property in a component
UE - Gameplay - Blueprint - Jun 20, 2018When making changes to a property in a component of a Blueprint, those changes are not highlighted when looking at the changes in the Components section of the Blueprint Diff tool. ...
Cumulative Patching does not work with Pak signing
UE - Foundation - Feb 20, 2024Cumulative patching is implemented by copying the generated pak files during staging of the base and each patch to the Releases directory. When creating a patch, all of the pak files from the releas ...
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 ...
Copying a grouped MaterialInstanceParameterDetail property that has spaces on it's name does not enclose it in double quotes, and later pasting won't work as expected
UE - Rendering Architecture - Materials - Aug 24, 2025Copying a grouped MaterialInstanceParameterDetail property that has spaces on it's name does not enclose it in double quotes, and later pasting won't work as expected. The licensee noticed this in a ...
Regression - Nested scene component subobjects are no longer being registered when the owning scene component is added to an existing Actor instance as an instanced component.
UE - Gameplay - Components - Nov 16, 2016This is a regression that was introduced with changes made to address issues with native vs. non-native component registration at Blueprint construction time ([Link Removed]). Prior to those change ...
Component inheritance does not appear to be consistent when running a project with the -game command line argument
UE - Gameplay - Blueprint - Jan 19, 2018Component property inheritance sometimes does not behave as expected when opening a project with the -game command line argument. Attempting to load a child Blueprint through code may not correctly ...
Mobile Previewer: Safe Zone Invalid Until Window Resize
UE - Platform - Mobile - Jul 12, 2021When the Mobile Previewer loads, the Safe Zone widget is not working properly at startup, and requires a window resize to update to the correct Safe Zone. ...
Procedural Mesh Component Memory leak when destroyed from an Array
UE - Gameplay - Oct 15, 2018When destroying an Actor with a Procedural Mesh Component; that is stored in an Array Variable, the memory for that Actor's Procedural Mesh Component is not cleared, leading to a Memory Leak. Howeve ...
Using dynamic bindings in a code class will result in the bindings becoming a permanent part of any Blueprint created from that class if a hot reload is performed.
UE - Foundation - Core - Mar 26, 2015If dynamic bindings are being used in a custom code class from which Blueprints are derived, any hot reload will make the bindings a permanent part of the Blueprint and they cannot be removed or cha ...