Unreal Engine Issues

Latent Actions do not execute if the blueprint name contains non-english characters

REGRESSION: Issue started occurring with 4.25.4 Blueprints with non-English characters in their name will not trigger latent actions. The following warning appears in the log in this case: LogScr ...

Can not assign texture in directory with Chinese characters to material instances.

Low-level memory tracking has negative values for "FMallocUnused" and "Untracked"

"FMallocUnused" is immediately bellow 0. "Untracked" is reported to go below 0 after very long playtimes (over 36 hours). Reported in version 4.25.3(CL 13942748). Tested and found negative values f ...

UE4 Scene Crashing upon opening

The user first launched his project and received an error on his HDD and UE4 crash with the default scene. He was able to open the project successfully a second time and opened the "Library Scene" ( ...

Templated enum GetValueAsString function returns incorrectly formatted string

For many years there has been a static function on UEnum called GetValueAsString which would convert an enum like EAttachmentRule::KeepWorld to the string "KeepWorld", if you passed in the explicit ...

Cruncher Sharp Double click navigation doesnt work

[Image Removed] [Image Removed] I suspect this came in at 13550642 where I created a more separated data/view model ...

IoStore: Can not update localization asset when change culture.

It can't be updated localization assets when enabled IOStore. When disabled IOStore, it'll be able to update localization assets. ...

Crash launch application adding .umap url

The application crashes when adding ".umap" to the launch map at application launch. If not specify ".umap", it will be able to launch application. There appears to be a failure to parse the URL. Th ...

Changing blueprint default values inside arrays only updates loaded child blueprints

The rules for delta serialization in UE4 are complicated, and the editor tries to hide them from you, which works 90% of the time but can lead to confusion and data loss in other situations. In the ...

Duplicating BP actors reset edited Variables to Default Value if Variables name start with Chinese Character

Hints: It has no problem in 4.24, only happening in 4.25 It has no problem as long as the Variable name is contained with Alphabat(English characters) fully; or start with Alphabat(A_变量 is fine) ...