Startup movies do not support 1080p video, and fails silently in the process

Tools - Oct 11, 2018

1080p videos do not play as startup movies, and there is no indication as why given by the editor. 1080p videos will work with media framework. There is no documentation either, so there is no indic ...

Datasmith files containing special characters do not import correctly in Unreal

UE - Editor - Content Pipeline - Datasmith - Exporters - Oct 10, 2018

User is experiencing an import issue with a 3DS Max 2019 file. Their workflow is as follows and works for all their assets but this one:Original file created in revit 2019Import revit link to 3dsmax ...

Cinematic DOF Does Not Work With TemporalAA Upsampling Enabled

UE - Graphics Features - Oct 9, 2018

Cinematic DOF does not work correctly if TemporalAA Upsampling is enabled. Standard Circle DOF works as expected with Upsampling. However, enabling the New DOF Algorithm produces almost no blur when ...

Race condition whilst cooking material layers: Invalid DDC key

UE - Graphics Features - Oct 5, 2018

When cooking the DDC key for a material layers parameter set may become invalid which causes issues reading/writing to the global material shader map and can lead to a crash. See original UDN post f ...

Set functions in UWindDirectionalSourceComponent are not exposed to be called from code

UE - Gameplay - Components - Oct 4, 2018

None of the Set functions in the UWindDirectionalSourceComponent are able to be called from code. The functions can be called from Blueprint, but without the ENGINE_API macro, none of the functions ...

Ensure Occurs When Using Russian Letters In a Text Variables

UE - Gameplay - Oct 4, 2018

The Editor will hang when using Russian characters for a text variable in a Blueprint. It seems to occur when using the character "л" is used. Only seems to occur once in a project. Found in 4.19 C ...

GameplayTask classes that have a BeginSpawningActor function never call the Activate function

UE - AI - Oct 3, 2018

A class that inherits from GameplayTask which also has a BeginSpawningActor function will not have its Activate function fired properly. Removing this function causes it to fire properly. Regressio ...

Importing specific Alembic geometry cache fails

UE - Editor - Content Pipeline - Import and Export - Oct 3, 2018

According to Licensee this problem seems to be caused by the time to sample the data. By changing the time to frame number, the import seems to be successful. \Engine\Plugins\Experimental\AlembicI ...

Blueprints with accent characters fail to open when converted from 4.19 to 4.20

Tools - Oct 2, 2018

Any Blueprint with accents in the name, coming from 4.19 won't open in 4.20. Double clicking the asset, trying to right click asset, results in no actions. When loading the project this message app ...

Couldn't switch cameras when Orthographic camera is set with sequencer

UE - Anim - Sequencer - Oct 1, 2018

This problem does not seem to occur during game play. ...