Unreal Engine Issues

Fixing a Blueprint's compilation error after editor reload causes instances to lose transform

Saving and reloading a Blueprint instance with a compilation error, a.k.a., "Bad Blueprint" will lead to a transform reset when the Blueprint is successfully recompiled. ...

Moving Asset back to the location where a fixed up redirector was located can remove it from source control

Pasting timeline components into another actor and then choosing "cancel" on fix self context function references results in a broken state

upd. Regression was checked on //UE4/Release-4.26 CL 15973114, issue was reproduced. Regression - No ...

Instanced meshes velocities fix

"We've been able to enable velocity rendering when using instanced rendering. However, by looking at the generated vertex shader the computation of the previous position seems to be incorrect: flo ...

Fix world to meters scale

Is changing the world to meters in the current 4.19 AR template project supposed to affect the world, or is world to meters only for VR projects currently? We have project where a client wants us to ...

Integrat PhysX crash fixes

Surface Profile Skin shading has some unexpected stripe rendering issues

So it looks like the artifact is definitely related to whether sss checkboard is enabled, but I can't reproduce it if enabling checkboard right after open the map, I mean it has to be reproduced aft ...

Failure to sign when packaging for iOS Distribution when using Remote Compile from a code project on Windows

Packaging for iOS Distribution from Windows using Remote Compile results in a failure during the signing portion. This seems to be caused by a hardcoded "false" for a property that is used to determ ...

Ensure fires during nativized build while packaging for any BP class based on UAnimNotify

Cooking will fail while attempting to convert a non-data-only Blueprint class based on the native UAnimNotify class when Blueprint nativization is enabled. Workaround in lieu of a fix would be to e ...

Fix center of mass calculations with welding.

Welding components uses precomputed weights for to determine center of mass for the actor. This can cause problems when users want to specify custom weights for certain components. ...