Setting Fullscreen Mode to "Fullscreen" results in Crash when using 4.23 from source

Rendering - RHI - Oct 11, 2019

Changing the screen settings to Fullscreen through code or blueprints results in a crash. This only happens in the source version of 4.23 and does not occur in the binary version of 4.23. I have att ...

Connection to dedicated server no longer works on iOS devices

Networking - Oct 11, 2019

"Looks like the cause of this is commit fb473a7 ( https://github.com/EpicGames/UnrealEngine/commit/fb473a7678c3669bebe0431dacaf52bcf8dee47f#diff-e6f727710008f31c0ece339b76041d2e ) included in v4.23. ...

Background Blur widget renders with offset in PIE when within a Retainer Box

Tools - Slate - Oct 10, 2019

The background blur widget does not render in the correct position in PIE when it is within a retainer box. It's likely that we're not applying the retainer window's offset properly when calling FSl ...

"Pausing" A TimeSynth causes a crash

Audio - Oct 10, 2019

Clicking and holding anywhere on the editor outside the viewport when PIE causes a crash. The AudioRendering thread throws the following assert: Assertion failed: FreeClipIndex < PlayingClipsPool_Au ...

UnrealMathTest fails when compiled with VS2019

DevTools - Oct 10, 2019

A crash or breakpoint is triggered when building UE4 with Project Files generated with -2019. Typeinfo.h was changed in MSVC v14.23 to just be typeinfo. ([Link Removed]) There is a pull request t ...

TMap entries are removed on Blueprint compile when using struct as key

Gameplay - Blueprint Compiler - Oct 10, 2019

Map entries are removed on Blueprint compile when using struct as key.  ...

UCharacterMovementComponent OldVelocity is pre-additive while Velocity is post-additive

Anim - Oct 10, 2019

In UCharacterMovementComponent code such as PhysFalling, RestorePreAdditiveRootMotionVelocity is called before FVector OldVelocity = Velocity; leaving OldVelocity in a pre-additive state making furt ...

HLSLCC crashed on parsing UAV related instruction

Rendering - Oct 10, 2019

1.glsl_type with image was not fully inited with HlslName field set, causing the crash 2.seems many types of op are not support by current hlslcc, cause error msg. e.g. RWTexture2D.Load[Image Remo ...

Unable to delete levels with Particles in them

Gameplay - Oct 9, 2019

The engine is unable to Level that has a Blueprint actor with a child actor component that has a particle system component. The follow message pops up: World /Game/LevelName.LevelName is in use. — ...