Unreal Engine Issues

Users project is crashing when double clicking the exe file after packaging for windows

If you package this users project, you will get a fatal error crash after double clicking the exe file. I was unable to reproduce this issue without using the users project. Project download link: ...

Calling a native interface function implemented by a non-nativized Blueprint asset from a nativized Blueprint asset will silently fail at runtime.

In the sample project we have a Widget Blueprint asset (SomeWidget) that implements a native interface (PrintSomethingInterface.h). However, in the DefaultEditor.ini file, we've also excluded all Wi ...

Texture2D values and gradients are incorrectly appended in Alpha channel

After creating new material and inputting a texture coordinate node, and connecting with two mask nodes for R and G, then connecting to "Make Float 4" nodes, the values in the Alpha Channel don't ma ...

Start Up Movies Require Click when Finished to Open Level

After a Start Up movie has completed playing, the initial default map will not load until the user clicks the mouse. The option to 'Wait for Movies to Complete' is checked which will force the user ...

Skeletal Meshes with Physics assets with less than 5 bodies will not use flag for Start Awake

When using a Physics Asset with 4 or less physics bodies the flag for Start Awake cannot be disabled, even if unchecked, when Simulate Physics is set to true. I've attached a project with assets f ...

Increased load times in a packaged project

There appear to be longer load times between 4.16 and 4.17/4.18 when opening a packaged project. Possible regression from 4.16 ...

Startup Movies Black Screen in Packaged Projects

Startup movies displaying black screen in packaged projects. Tested with 4.20p3 4135216 and 4.21 4157973 ...

Runtime Virtual Texture Volume does not update correctly after World Origin shifting

Network Prediction Insights tool checks/crashes with trace data from a multiplayer PIE session

Loading a trace in Insights that has Network Prediction channel data from a multi-client PIE session will hit a check and crash the Insights tool. ...

Depth of field and Refraction issue

Refraction does not adjust the scene depth texture, leading to a mismatch between Scene Color samples and Scene Depth samples. ...