Unreal Engine Issues

Warning in Net.PacketNotify Test

Warning when running the packet notify test, regarding missed acks. ...

Play Dynamic Force Feedback does not work on Android

When trying to trigger vibration through the Play Dynamic Force Feedback node, nothing happens on Android. I tested this on Windows as well with an Xbox Series X controller connected, and the vibrat ...

Moving a static mesh placed across world partition grids does not properly move the foliage instance on it

Outline artefact on cascade shadow transition

Some pixels at the edge between cascaded shadow maps and distance field shadows can be skipped by both, leading to unshadowed pixels. Licensee reports the bug happening in 5.3 as well. Test project ...

Subsurface Scattering Checkerboard with SceneColourFormat 3 (High Scalability) leads to a visual artefact when temporal upscaling is in use

Primarily visible at very low internal resolutions (25-33%), the SSS checkerboard with an RGB scene colour format (r.SceneColorFormat 3) causes a double-image artefact both internally and on the sil ...

Nanite TwoSidedSign is backwards

The value of MaterialExpressionTwoSidedSign is flipped when calculating the Opacity Mask for Nanite meshes. This seems to be a regression in 5.5. ...

Changing UPROPERTY() settings causes detail components to vanish in editor

When a UPROPERTY() macro is changed and the recompiled, the hot reload in the editor will cause any BP based on the class to lose certain aspects of the Detail panel such as the actor's transform. ...

Using Bake Material Position Offset Into Collision causes landscape to have no collision

Creating a material with World Position Offset and enabling "Bake Material Position Offset Into Collision" causes the landscape to have no collision. Disabling this feature causes collision to come ...

Editor crashes when attempting to open a new level from a level that has an external curve in a timeline within the level blueprint

The editor crashes when a user imports a float curve into a timeline within the level blueprint then attempts to open another level. ...

Delay nodes used in a macro cause subsequent macro calls during the delay to never complete

Calling a macro that has a delay node again before the original call's delay could finish will cause the second call to be ignored when reaching the delay node. This did not occur in 4.12.5 and is n ...