Unreal Engine Issues

Particle emitter with Mesh Data type does not change material to new material instance

Particle emitter with Mesh Data type does not change material to new material instance. It will not apply changes that are being made at run time to a parameter in the material instance being used.  ...

Dynamic Parameters do not function in Beam Emitters

Transfered Issue from TTP # 298314, originally opened in TTP on 6/3/2013 and updated with Answerhub post information on 5/18/2014 Dynamic Parameters cannot be used with a Beam Emitter, they pass no ...

Constant interpolation in animation curve points appears to prevent material updates after hitting apply

When changing the key interpolation of a material curve in an animation to constant it appears to break the updating of the material after the changes are applied. Until the changes are applied it a ...

Updates to DesiredFocusWidget for a UserWidget are not propagated to existing instances of it inside the WidgetTree of other widgets

This issue has been reproduced in UE 5.3 to 5.7 and source versions. A repro project is available. Below are the findings from an initial investigation of the problem. Normally, when a UserWidget p ...

Crash removing a split parameter pin that is linked

Crash occurs if the user splits an Output Parameter on a function, then links one of the pins, and then removes the parameter entirely. I could not reproduce this in Main. ...

UDN: LICENSEE: Duplicated parameters in Material Parameter Collection are buggy

When you add a parameter by doing DUPLICATE of an existing one, the new settings don't take effect. (Adding parameters and other copy/pasting seems fine as far as I can tell) I verified this at EGJ ...

Lumen reflection distortion

Lumen reflections appear distorted depending on the camera orientation. ...

Niagara Parameter Collection doesn't work for Simulation Stage

In editor, custom primitive data dont work on instance static meshes in bp instance

Changes to custom primitive data properties for instanced meshes placed in the editor work in-game but are not otherwise reflected in-editor. ...

Flickering in Material Editor Preview when Absolute World Position node used

Creating a material with "Absolute World Position" node plugged into the "World Position Offset" input of the base Material node results in flickering in the preview window of the material editor. ...