Unreal Engine Issues

Bug in StringTemplate.cpp related to modulo operator in MaterialTemplate.ush (code fix provided)

Shader Template files like MaterialTemplate.ush do not submit previous chunks when encountering a `%` character, unless that `%` character is `%s` or `% {...} `. Because the error is happening ...

GameplayTagEventMap is cleared on clients when "AbilitySystem.Fix.ReplicateTagCountContainerWithIris" is enabled

Fix AGameModeBase::GetGameSessionClass

AGameModeBase::GetGameSessionClass wasn't properly returning the set GameSessionClass. ...

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

Selection outline not visible when actor is selected on certain AMD GPUs

When selecting an actor in the viewport, some AMD GPU users are reporting that the selection outline is not visible. Rolling drivers back to 17.1.1 correct the behavior.| Two EngineQA tester have ...