Unreal Engine Issues

Create ini setting for DirectoriesToAlwaysStageAsUFSChunkRules to specify the chunks for UFS files.

Some plugins and projects are staging large amounts of AdditionalUFS files, and the only way to specify their chunk for streaming and optional install is using PakFileRules.ini. Add a setting in Ga ...

Fix iterative cooks to keep track of CookAdditionalFiles and delete them when the package file that created them is invalidated

A licensee reports they are using the CookAdditionalFilesOverride function in UObject to add files to the project. This file is properly copied into the Staging area during Packaging, and is appropr ...

Material Instance used textures list shows sample textures used as Input Preview Textures within Material Functions

When the default values of Instanced variables are changed in Blueprint, the variables of actors on the level don't follow the default values

When the default value of an Instanced variable defined in C++ is changed, it is not reflected in the default value of an Actor placed on a Level. In the reproduction procedure, when the default v ...

SubCategory of UFUNCTION does NOT work properly if using CallInEditor

If you use both Category hierarchy and CallInEditor in UFUNCTION, it will result in an unintended sequence as shown below. [Image Removed] And, the following code can solve this issue void FDetai ...

Autosave Causes Outliner to Lose Content in Blueprint Sub-levels

When Unreal autosaves, any items in the outliner from a sub-level that have been switched on by the sequencer track disappear, BUT only in the outliner, everything else can still see the scene fully ...

[Waveform Editor] - Waveform Editor has noticeable latency with larger files [investigate only for now]

I've noticed as I've been working with the Wave Form Editor, that it works fairly well for smaller files, but on longer assets there can be some pretty noticeable latency when adding and adjusting t ...

Blueprint breakpoints on EventEndPlay do not break execution in PIE

Blueprint breakpoints on EventEndPlay do not break execution of the PIE session before the session is destroyed. ...

Multiple water body blend modes produce unexpected results

3D Transformation Widget Unusable at Very Large Scales

When using a Transformation Widget in a Blueprint, the size of the widget seems to be some kind of product of size in screen space, object scale, and the transform widget scale that makes it much to ...