Slate Widget STileView Scrolling Mouse Wheel Lock

Tools - Sep 15, 2017

When using the mouse wheel to scroll nested scroll boxes, scrolling up no longer works once the inner tile view has been scrolled to the top. Regression: Yes, this behavior does not occur in 4.16.3 ...

Add Component node loses reference on BP compile

UE - Gameplay - Nov 16, 2017

When adding an actor or scene component blueprint reference to an actor blueprint, the component gets changed to an Add Component node when updating the component blueprint. This bug was not present ...

Collision change is not replicated to clients when server makes change to the scale of a mesh

UE - Networking - Jul 20, 2018

When the scale of a mesh is changed on the Server, the collision change of that mesh is not replicated properly to clients, resulting in the collision being different between the server and client. ...

Lightmap Density Of Imported FBX Offsetting When Lighting Is Built

UE - Graphics Features - Oct 8, 2018

Lightmap density of imported fbxs will be offset when lighting is built.  Working as expected in 4.19 CL# 4033788 Found in 4.20 CL# 4369336, 4.22 CL# 4433008 This is a regression  ...

Custom Stencil Not Working for Mobile

UE - Platform - Mobile - Nov 14, 2018

Setting a custom stencil on meshes is not working when using a mobile renderer. This is working as expected in 4.20 CL# 4369336 Found in 4.21 CL# 4541578 and 4.22 CL# 4556068 This is a regression ...

BumpOffset Node Produces Incorrect Results When Texture Coordinate Index Is Not 0

UE - Graphics Features - Jan 18, 2019

When using the BumpOffset node, it will produce incorrect resultsi if the Texture Coordinate Index is not 0. Found in 4.20 CL# 4369336. 4.21 CL# 4613538, 4.22 CL# 4751672 ...

Spot Lights Do Not Cast Dynamic Shadows If "Support PointLight WholeSceneShadows" is disabled

UE - Graphics Features - Jan 30, 2019

If you disable "Support PointLight WholeSceneShadows" spotlights stop casting shadows. This is working as expected in 4.20 CL# 4369336. Found in 4.21 CL# 4753647 and 4.22 CL# 4809892 This is a reg ...

Setting a Vector value in the Material Parameter Collection causes crash

UE - Graphics Features - Mar 1, 2019

Creating a Vector parameter within the Material Parameter collection causes a crash with the engine. Tested in 4.21.2 (CL - 4753647), 4.22 (CL - 5159901), 4.23 (CL - 4980862) ...

Crash on debugging a minimized Blueprint (access violation in SWatchTreeWidgetItem)

UE - Gameplay - Blueprint Editor - Mar 27, 2019

Debugging a blueprint with a breakpoint while the Blueprint Editor window is minimized causes the editor to crash. Tested in 4.21.2 (CL - 4753647), 4.22 (CL - 5531554), 4.23 (CL - 5586947) ...

Shadows are Heavily Aliased with PCSS Enabled

UE - Graphics Features - Apr 11, 2019

Shadows are exetremely rough and aliased if r.shadow.FilterMethod is set to 1.  Working as expected in 4.21 CL# 4753647  Found in 4.22 CL# 5660361 and 4.23 CL# 5810496 ...