Unreal Engine Issues
Unreal Engine Issues
t.MaxFPS 0 locks FPS to 120 instead of unlocking it in Viewport
Tools - Nov 7, 2017When unlocking FPS in Viewport it defaults to 120 instead of potential max FPS. If you do this during Launch the 't.MaxFPS 0' or 't.MaxFPS -1' commands unlock the FPS to the max the GPU allows in th ...
Broken assignation of materials when merging meshes
UE - LD & Modeling - Modeling Tools - Mesh Editing - Jul 18, 2019See the following UDN for a good visual explanation of the bug: https://udn.unrealengine.com/questions/512811/view.html Seems like this was introduced around CL 5639656. ...
Playing as a Pawn that is a Duplicate of a Blueprint Class doesn't create an Attribute Set
UE - Gameplay - Oct 1, 2019Creating a duplicate of a Blueprint class that has an AttributeSet seems to be interfering with the creation of the AttributeSet. ...
Material Billboard Component doesn't respect screen size when taking into account Camera FOV and AR
UE - Platform - XR - Aug 27, 2020Material Billboard Component skews when Camera's Aspect Ratio is changed, and varies in size with changes to the Camera's Field Of View. Reported in version 4.25.3 (CL-13942748) and tested in versi ...
Light Propagation Volume does not work on Linux
UE - Graphics Features - Feb 1, 2021It's easiest to see the change on the top of the table or back of the chairs when following the repro steps. I've attached screenshots of the Windows and Linux comparison with Intensity set to 20. ...
Crash when creating a static mesh from a Procedural Mesh Component that has been used with a Create Mesh Section node
UE - LD & Modeling - Modeling Tools - Mesh Editing - May 5, 2021When creating a static mesh from a Procedural Mesh Component that has been used by a Create Mesh Section node, the editor crashes. The editor doesn't crash when selecting the Create Static Mesh butt ...
Level instance in unloaded data layer stays loaded.
UE - World Creation - Worldbuilding Tools - Level Instances - Sep 19, 2022Mover standalone backend allows non-persistent sync structs to carry over between frames
UE - Gameplay - Player Movement - Mover - Jul 16, 2025Only certain sync state structs are intended to persist between frames. These are configured via MoverComponent's PersistentSyncStateDataTypes array. There appears to be a bug in the way the standa ...
TMap "Categories" meta propagates into structs it shouldn't apply to
UE - Gameplay - Gameplay Tags - Sep 22, 2025When using TMap with "Categories" meta UPROPERTY tag for gameplay tags, it propagates into structs that it shouldn't reaching into. The expectation is that it would only impact the layer of gameplay ...
Switching to SM4 with LPVs active crashes Editor
UE - Graphics Features - Jun 18, 2015Switching to SM4 when you have LPVs active in a project will crash a project. Also reproduced in Main Promotable-CL-2589716 and 4.8.0 Launcher [Link Removed] ...