Renaming blueprint macro causes Failed import for EdGraph errors

UE - Gameplay - Blueprint - Feb 4, 2022

Macro libraries try to support guid-based renaming: when a specific macro is renamed blueprints using the old name will automatically point to the new name and work properly. However, this fixup hap ...

If remove the muted side from the two child tracks in sequencer, the remaining tracks will be muted forever

UE - Anim - Sequencer - Feb 4, 2022

The cause was that the information remained in Rows Disabled of Track even though it returned to one Track by the delete operation from the state where there was a child Track of multiple rows. As ...

Volumetric Cloud + Sun ghosting artefacts around a static cube

UE - Graphics Features - Feb 3, 2022

Video of the issue here - [Link Removed] 4.27 and 5.0 seem to display slightly different outcomes. In 5.0 the sun only appears very close to the cube, whereas in 4.27 is can appear a bit further ou ...

EditInlineNew properties on components don't work if the component name has whitespace

UE - Gameplay - Blueprint Editor - Feb 1, 2022

EditInlineNew properties on components can't be properly set if the component name has whitespace in it. This appears to be a problem with resolving the property name in SPropertyEditorEditInline::O ...

abnormal sound output on UMG animation track

UE - Anim - Sequencer - Jan 28, 2022

Sound repeated at initial frame only on 4.27. it was worked fine on 4.26 and 4.25 It is probably a side effect caused by the sequencer changes below.​ Sequencer: Move Finalization phase back onto ...

Set Niagara Variable (Object) for Texture Object fails

UE - Niagara - Jan 28, 2022

Set Niagara Variable (Object) does not work for texture objects. ...

Specific Blend Mode of Material on UMG render incorrectly when HDR is enabled

UE - Graphics Features - Jan 27, 2022

This issue occurs with the Additive and Alpha Holdout settings. ...

FScriptMapHelper::HasKey() and FScriptSetHelper::HasElement() fail on new keys with a substring of another key

UE - Editor - Workflow Systems - Jan 27, 2022

Duplicate key checking in maps and sets in the editor is done via calls to FScriptMapHelper::HasKey() and FScriptSetHelper::HasElement(), but this code is checking for object names which are subsets ...

Touch position return wrong value if the orientation of the terminal is changed after startup

UE - Platform - Mobile - Jan 26, 2022

Touch position return wrong data on Pixel 6 and Android 12. it does not occur unless the device is rotated from the initial state. As far as I investigate, the touch position only return data from ...

Niagara Dynamic Parameters do not reflect layers in material instances.

UE - Niagara - Jan 19, 2022

The names of dynamic parameters in material layers do not seem to update from material instances.  ...