Unreal Engine Issues

Arithmetic assignment operators (e.g. +=, *=) in Niagara inputs are applied twice .

Arithmetic assignment operators seem to be applied twice when committed in the Niagara stack.  This occurs when entering *= 2.0 for example into a float input. This may be the result of the SNiagar ...

Gameplay Effects can hold stale references to GameplayTags when switching Gameplay Effect Component type

Gameplay Effects can hold stale references to Gameplay Tags when the adding component is switched for a different type. The tags are serialised, and their presence can be confirmed with Reference Vi ...

SGameplayTagQueryWidget constructed in SGameplayTagQueryEntryBox ignores UGameplayTagsManager::OnGetCategoriesMetaFromPropertyHandle

2 issues with SGameplayTagQueryEntryBox that a UDN customer noticed:We are binding a delegate to UGameplayTagsManager::OnGetCategoriesMetaFromPropertyHandle to customize how the categories are retri ...

Mouse lock on a widget in the RetainerBox is misaligned and locked in the wrong position in the standalone/package application

Locking the mouse to a widget covered by a Retainerbox locks it in a different position in the standalone/packaging application than in PIE.  This does not happen if RetainerBox is disabled and the ...

NiagaraEmitter is saved with the different asset name when renaming with speceficed name

Renaming a NiagaraEmitter to a specific asset name changes it to an unspecified asset name. This happens only with NiagaraEmitter, not with other assets.  ...

ParticlePosition doesn't use Previous values

FHLSLMaterialTranslator::ParticlePosition does not return Previous information when request which can result in bad motion vector calculation. ...

WP HLOD Crash on Small Cell Sizes

Cannot copy from the message log when building with Clang

This was disabled for clang a long time ago in CL 3019423 due to a codegen crash but seems like the bug is fixed now ...

Groom shadows stay visible when component is hidden

This appears to happen with both Virtual Shadow Maps and Cascaded Shadow Maps. ...

Merge Actor - Textures created with the "Merge" option are not visible in the Content Browser

A recent modification to the CB behavior made it so that only the main asset of a package is visible in the CB. It was unknown, but the merge actor tool "Merge" option has been creating a single pa ...