UI transparency breaks when dragging a game window around the screen

UE - Editor - UI Systems - Nov 20, 2017

When a game window launched from UE is moved around the screen, any transparent elements on the screen will turn fully opaque. The loss of transparency also causes some text to become blurry. This d ...

Mouse cursor does not disappear when widget has focus

UE - Editor - UI Systems - Nov 20, 2017

THere is an issue with the Mouse cursor when using UMG with the set show mouse cursor option. after setting the set show mouse cursor off pressing a widget and giving it focus causes the mouse curso ...

Exclusive Nativization Method will nativize unselected struct blueprints

UE - Gameplay - Nov 20, 2017

When the Project Nativization method is set to Exclusive, packaging the project will cause any struct blueprint (UUserDefinedStruct asset) to be nativized, without actually setting nativization on t ...

Precomputed visibility cells generated from extruded volume is insufficient

UE - Graphics Features - Nov 20, 2017

The questioner of this problem at UDN wants to create a Precomputed Vosability Volume with the deformed volume. When Extruded Precomputed Vosability Volume is used, the cell will not fill this volum ...

Inaccurate Collision is Generated When Using Multi Convex Hull (PhysicsAsset Editor)

UE - Simulation - Physics - Nov 17, 2017

Multi Convex Hull created bodies that are not as accurate as in version 4.17 on skeletal meshes ...

[CrashReport] UE4Editor_SlateCore!TIndirectArray<SOverlay::FOverlaySlot,FDefaultAllocator>::DestructAndFreeItems() [indirectarray.h:444]

Tools - Nov 17, 2017

This is an infrequent crash in the 4.18 release. Based on individual crash details it seems frequently related to Sequencer. Users have not provided any descriptions of their actions when the crash ...

[CrashReport] UE4Editor_ShaderCore!FVertexFactory::Set() [vertexfactory.cpp:190]

UE - Graphics Features - Nov 17, 2017

This is a common crash in the 4.18 release. It is the exact same callstack (and crashGroup) as in [Link Removed], although that Jira had specific repro steps and was confirmed fixed in 4.18.0. The ...

Result of applying force is inconsistent between different methods of doing so when rotation is also being applied

UE - Simulation - Physics - Nov 17, 2017

An Answerhub user reported this issue where having force applied in different methods and situations results in different results only when rotation is also being applied. The example project contai ...

UV Flipping Mode Causes Stretching of Particles

UE - Niagara - Nov 17, 2017

If "UVFlipping Mode" under Rendering on the Required node of an emitter is set to anything other than "None," the particles can become stretched and distorted. As a workaround, I have discovered th ...

uexp file of certain maps are always packaged when patching

UE - Foundation - Core - Nov 17, 2017

When generating a patch, (patch pak file) the .uexp file of the Editor Start Map and the Game Default Map are both packaged into the patch, even if another map is specified. Example: Editor Start ...