Unreal Engine Issues

Scene capture allocate internal render target

A Blueprint created from Actors in the level does not preserve the relationship (hierarchy and transforms) of both components

A Blueprint created from Actors in the level does not preserve the relationship (hierarchy and transforms) of both components. Reproduced in 4.8.3 binary, 4.9 Release (//depot/UE4-Releases/4.9/Prom ...

Extra Game Mode frames are rendered between Shots

Extra Game Mode frames are rendered between Shots Regression: YES Worked: 4.13.1 CL:3142249 Broken: 4.14 Releases CL:3164219 ...

[CrashReport] D3D 'Hung' crash - FD3D11DynamicRHI::ReadSurfaceDataNoMSAARaw

This is a frequent D3D Hung crash, similar to [Link Removed] and [Link Removed]. A potential fix for the other crashes was released in 4.14.2, but this crash is still occurring on that release. ...

Trace collision audio occlusion is not working on iOS/tvOS

The Left side of the test map works in 4.16 and Main so marking this as a regression. Tested on iPhone6S+_4982 OS: 10.2.1 and tvOS 10.2 ...

UMG element clipping does not work on Galaxy S8 (Mali)

UMG clipping requires stencil. Seems like we don't request stencil when creating backbuffer Changing const int EGLMinStencilBits = 0; to const int EGLMinStencilBits = 8; fixes this. ...

RF_WasLoaded is set to False in PIE for instances of a Blueprint if the Blueprint is recompiled

The RF_WasLoaded flag is set to false for Blueprint instances in PIE if the Blueprint is edited and compiled. This is fixed by saving the level which is a simple workaround but this should be needed ...

In the DragForce module drag amounts greater than one can accelerate the particle instead of slowing it down.

Drag force allows for values greater than 1, which can cause the drag force to exceed the initial velocity, which will continue to compound until a NaN is reached or the particle's lifetime is up. ...

Cannot change Collision Profile of BP component instances

BP instances placed in level cannot have their components' collision profiles modified to anything other than default and custom. Note that this did not occur in 4.22 (after applying the separate ...

Niagara system loses source emitters when moving Engine from 4.22 or earlier to 4.23 or later.

The following code causes this behavior.// NiagaraSystem.cpp for (FNiagaraEmitterHandle& EmitterHandle : EmitterHandles) { EmitterHandle.ConditionalPostLoad(NiagaraVer); if (!EmitterHandl ...