Translucency area has stripe-style issue on TSR

UE - Graphics Features - Mar 28, 2024

The TSR History Rejection buffer develops a grid-like artifact over translucent, camera-facingplanes. This problem can be mitigated by increasing r.TSR.ShadingRejection.TileOverscan from 3 to 4 with ...

[AI] Changing NavMesh Resolution in config file does not update the quantFactor of existing navmesh

UE - AI - Navigation - Aug 6, 2025

When we changed the resolution in the config, if you open a map and then look at the navmesh, the resolution it shows is the updated one from the config (assuming you haven't overridden anything) ...

Input pins of BP node are not updated after a hot reload

UE - Gameplay - Blueprint - Apr 17, 2015

If a code defined function that takes in a parameter is called from blueprints, the BP node will show the input pin for the parameter. If the parameter list is changed after the node is created and ...

Construction script on child actor components not respected in PIE

UE - Gameplay - Blueprint - Jan 14, 2016

Child Actor Components run their construction scripts upon parent's placement in level. However, these specifications are not maintained once PIE is initiated. ...

promoting a variable to a local variable in another blueprint creates compile error.

UE - Gameplay - Blueprint - Sep 30, 2015

If a local variable set variable is copied/pasted over to a second blueprint and the input pin is promoted to a local variable, compiling the blueprint will cause a compile error to appear until the ...

Child blueprint loses categories after parent is compiled and PIE

UE - Gameplay - Blueprint - Jul 30, 2015

If a parent blueprint is compiled and then play in editor is utilized. The child blueprint will lose categories in it's my detail's pane until recompiled. Note: Licensee reports that variables res ...

Start up movies will only play for a second or two and then the level will load.

UE - Platform - Mobile - Oct 27, 2014

If you place a mp4 file into the startup movies section of the Project Settings, the movie will only play for a brief time before the level loads. If you play the play the level with the startup m ...

Objects parented to a Destructible Mesh within a bp will not follow if the DM is simulating physics

UE - Simulation - Physics - Destruction - Dec 17, 2014

Objects parented to a Destructible Mesh within a bp will not follow if the DM is simulating physics. ...

IgnoreActorWhenMoving node doesn't work if the actor variable is set per instance

UE - Gameplay - Apr 30, 2015

IgnoreActorWhenMoving node doesn't work if the actor variable is set per instance. ...

Save on Compile "On Success Only" Does not save on Successful Compiles with Warnings

UE - Gameplay - Blueprint - Aug 6, 2015

The option to save on Compile "On Success Only" does not save on successful compiles that contain warnings. If this is intended, then to avoid confusion, the tool tip should specifiy that "Blueprin ...