Unreal Engine Issues

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 ...

Niagara Mesh Renderer causes GPU hang on IOS 13.4.1

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 ...

Level instance in unloaded data layer stays loaded.

[Waveform Editor] - Waveform Editor has noticeable latency with larger files

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 ...

Push based fast array with net.PushModelSkipUndirtiedFastArrays not replicating across multiple PIE sessions

The conditions for this bug are fairly specific. The actor must be statically placed, with its only replicated property being the fast array, and net.PushModelSkipUndirtiedFastArrays must be enabled ...

PoseSearch::GenerateDDCKey is not deterministic between editor restarts

we need to investigate why between editor restarts the DDC key generation for the motion matching pose search databases is not deterministic, causing the assets to be rebuilt ...

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. ...

Electra video playback fails if project or package is under multibyte characters path

The URL parser encodes the input path to a URL-encoded path even if it is local, so if the path contains unicode characters (such as Japanese Kanji ), the media file cannot be read. Following worka ...