Static Mesh flicker in Player Collision Viewmode

UE - Graphics Features - Aug 8, 2019

All UCX_geometry that have bounds larger than its geometry flicker when in Player Collision Viewmode. Tested in: 4.21.2 (CL - 4753647), 4.22.3 (CL - 7053647), 4.23 P5(CL - 7838574), 4.24 (CL - 786 ...

Attachment rules in Level Sequencer are broken

UE - Anim - Sequencer - Oct 2, 2019

The Attach track attachment rules seems to have no effect when selecting "Snap to Target" and playing the sequence. This was reported and tested in 4.23 (CL-8386587). This was reproduced in 4.22.3 ...

Searching Global Illumination inside the details section of a post process volume does not return any results.

Tools - Nov 20, 2019

Searching "Global" in the details panel of a post process volume does not provide Global Illumination as a result, but searching "GI" does. Tested In: 4.22.3 CL#7053642, 4.24 P3 CL#10283392 , 4.25 ...

Show collision command turns on lights that have 'Visibility' set to false

UE - Graphics Features - Dec 2, 2019

Running the console command "Show Collision" when lights are placed in the scene with "Visibility" off results in the lights turning back on. Tested in: 4.22.3 CL#7053642 , 4.24.P4 CL#10387632, 4 ...

AudioMixer has private include in public header

UE - Audio - Dec 4, 2019

It is possible to receive a compilation error when including a public header (AudioMixerDevice.h) because it includes a private header (AudioMixerSourceManager.h)  Tested In :  4.22.3 CL#7053642  ...

App fails to open on Android: Assertion failed referencing LaunchAndroid.cpp:415

UE - Editor - Content Pipeline - Datasmith - Importer - Oct 11, 2018

AR App fails to open on Android: Assertion failed referencing LaunchAndroid.cpp:415 when Unreal Datasmith is installed.10-11 11:22:57.499: D/UE4(18917): LogAndroid: Error: Assertion failed: false [F ...

OnClick Events for buttons in 3D Widgets not firing in Multiplayer

UE - Editor - UI Systems - Mar 6, 2017

OnClick Events for buttons in 3D Widgets not firing in Multiplayer. This issue only affects the button component as other Widget components that used the Left mouse button function as expected Regr ...

Unable to change Blueprint Child Variable values in Python

UE - Editor - Workflow Systems - Dec 20, 2018

Using the Python function unreal.SystemLibrary.set_bool_property_by_name() to change the default variable values of a child Blueprint do not work as intended. Tested in 4.20.3 (CL - 4369336), 4.21. ...

Spline points deleted after movement

UE - Editor - Workflow Systems - Sep 6, 2019

Spline points are deleted from the Spline component after adding them in Python and then moving them in the scene. Tested in 4.21.2 (CL - 4753647) 4.22.3 (CL - 7053647), 4.23.0 (CL - 8386587), 4.24 ...

Unloading a spawned Detour AI Controller using Level Streaming causes a crash

UE - AI - Oct 14, 2019

In a Level Streaming setup, unloading a level that has spawned an AI Character with a Detour AI Controller causes a crash. This was reported and tested in 4.23 (CL-8386587). This was reproduced in ...