Unreal Engine Issues

MoviePlayer loading screen with FLoadingScreenAttributes::bAllowEngineTick results in high DeltaSeconds tick post-playback

IGameMoviePlayer playback of a movie during loading screen lets you set bAllowEngineTick  = true as a parameter. This will make FDefaultGameMoviePlayer manually tick the engine: if (GEngine && bAll ...

Adding new elements to an array in code does not update in a class based blueprint on compile

When adding elements to an array inside a code class, blueprint instances of the class do not have their array updated after a hot reload. ...

Maya Generated FBX Files Fail to Import Properly into UE 4.10

The same animation FBX file generated from Maya will import correctly into UE4.9 but incorrectly into UE4.10. Moreover, if you generate an FBX from the animation that was successfully imported from ...

Invalid DumpGPU capture when ProjectDisplayedTitle contains special utf8 chars

Placing a special UTF-8 character into the "ProjectDisplayedTitle" will result in GPU dumps failing to open. This appears to be because the dump will switch between us-ascii and UTF-16 file formats ...

Destructible Mesh spawned before static mesh with World or Asset support is not supported

When using World Support or Asset Defined Support on a Destructible mesh that is spawned in, if the static world geometry is spawned in after the DM it will not be supported. However, if the static ...

Overriding a UFUNCTION in a Blueprint results in an empty "Event Graph" category being shown in a Data Asset containing an instance of the Blueprint

When looking at the details of a UObject contained in a Data Asset, some categories are shown even though they should not be. If a category is marked as hidden in the parent class, it will be shown ...

When the AppleProRes plugin is enabled, the playback speed of the video changes in the MediaTrack sequencer.

[Voice Virtualization][Focus] - Looping sounds do not become Virtual when Virtualization is Restart and Volume Attenuation is set to 0 by Focus settings

When using Voice Virtualization settings, if the Attenuation Volume becomes 0.0 do to Focus setting, Restart does not behave as expected on looping sounds. Both Disabled and Play when Silent do wo ...

Duplicated PCG Component instance resets overridden parameters to default

Context: Similar to parameters in the Material editor, PCG Graph Parameters are user created overridable values and can help create customizable graphs for a variety of situations. Problem: The l ...

Complex Collision as Simple causes odd Overlap behavior

When triggering overlap events with a Static Mesh using Complex Collision as Simple, the overlap Begin and End events will be triggered rapidly in sequence. Changing to Default collision will fix t ...