Adding HISM instance on a Dedicated Server causes a crash

Tools - Nov 14, 2018

Adding an instance of an HISM on a dedicated server causes an assert. Regression?: No This occurred in 4.20 ...

Using "RecompileShaders All" while PIE crashes editor with an assert.

UE - Graphics Features - Nov 10, 2016

I ran the command with no actual changes to shaders. Recompileshaders global and changed did not crash the editor. ...

Crash enabling Async Scene and opening level in editor

UE - Gameplay - Jan 11, 2017

This is a regression from 4.14.3 at CL 3251583 ...

Vehicle Template Gears incorrectly affect gear shift speed

UE - Gameplay - Feb 8, 2016

Changing the Up Ratio of a vehicle movement component incorrectly alters gear shifting. For example, setting the ratio for Gear 3 to 1.0 will keep the vehicle from shifting to gear 2, etc. ...

Color Picker closes when selecting a new color for a Linear Color in a Struct

UE - Gameplay - Blueprint - Nov 20, 2015

The color picker will close when selecting a new color for a Linear Color variable if the Value property is set to a value other than 0 within a Struct. This does not seem to occur with the color p ...

OnSmartLinkReached Event Not Firing in PIE

UE - AI - Sep 20, 2016

The OnSmartLinkReached event is not firing in PIE. This is a regression. In 4.12.5 the event fires as expected. Found in 4.13.0 CL 3106830 Reproduced in 4.14 Main CL 3129233. ...

Level sequence updates more than once per frame when content editors are open

UE - Anim - Sequencer - May 27, 2016

When content editors are open, they cause sequencer to be updated more than once per frame. This causes animations running in PIE to play faster than expected. Licensee provides code for a potential ...

REGRESSION: HierarchicalInstancedStaticMeshComponent LOD transitions are broken in 4.9 and Main

UE - Graphics Features - Aug 24, 2015

While testing another fix I noticed HISM LOD transitions are not working in Main or 4.9 branch. There is no screen-door effect and multiple LODs seem to be rendering simultaneously compared to 4.8. ...

FixupRedirects commandlet does not auto-commit deletions

Tools - Jun 15, 2016

See this UDN: https://udn.unrealengine.com/questions/297811/fixupredirects-commandlet-submitting-marked-for-de.html The fix looks straightforward, just a one-line change but could benefit from tes ...

MatineeFightScene too dark due to tonemapperfilm changes

Docs - Samples - Jan 31, 2017

MatineeFightScene is heavily dependent on the old Film settings in the tonemapper. Since 4.15 made changes to this, the scene is extremely dark. The project needs r.TonemapperFilm=0 added so that i ...