Unreal Engine Issues

AbilityAsync objects do not have proper EndAction support

UAbilityAsync objects do not properly support a way to EndAction like a UAbilityTask. ...

Instanced subobject property values nested inside struct members are copied from default data at object initialization time, possibly leading to an EDL error at runtime.

When initializing struct members from default data at UObject initialization time, we are currently copying struct properties that contain instanced subobjects from the default data. This can potent ...

Crash in FMacApplication::FindScreenByCocoaPosition when using the mouse in the ILIAD plugin.

I think this could occur anytime but is probably very rare. However using this plugin from the reported UDN makes it much easier to repro as they are calling FMacApplication::ConvertCocoaPositionTo ...

Datasmith Tessellation does not work as operator in the visual dataprep

Editor crash on Instanced Subobjects of an outer class in Class Picker

Include better comments/warnings for certain edge cases when using dependent actors with RepGraph

A recent UDN brought up two scenarios with dependent actors in RepGraph that could use better comments/warnings. The first is that calling ForceNetUpdate on an actor that is only replicated as a de ...

Pixelated volumetric translucent shadows

I narrowed down the issue to the Main call of ShadowProjectionPixelShader, and tested (on 4.26 and 4.27) a combo of different material and light shadow settings, as well as enabling transmission on ...

MediaFramework - Webcam Video input shows as black in Media Player

Alejandro Arango 3 days ago In fact, it seems the 4.27 changes are conditioned by WMFMEDIA_PLAYER_VERSION . So the only change needed is in WmfMedia.Build.cs . They only need to change it to say: P ...

Cascade To Niagara Converter doesn't place Collision Module in a proper order in the stage

Plugin Config filenames need to be different for Engine vs Game plugins

Right now, plugins installed to the game directory will only load plugin-specific config files with the path /Project/Plugins/PluginPath/Config/*Default*PluginName.ini. However, engine plugins will ...