Unloading a spawned Detour AI Controller using Level Streaming causes a crash

UE - AI - Oct 14, 2019

In a Level Streaming setup, unloading a level that has spawned an AI Character with a Detour AI Controller causes a crash. This was reported and tested in 4.23 (CL-8386587). This was reproduced in ...

Sorting a Blueprint variable into a subcategory separates variables into separate category structures

UE - Gameplay - Blueprint - Oct 14, 2019

Within the Blueprint Editor, it is possible to create subcategories for variables to be sorted into. Doing so separates variables not nested into subcategories out into standalone, top-level structu ...

Camera modifier blueprint used in another blueprint crashes editor (Assert failed in edit condition code in details panel)

Tools - Oct 14, 2019

Changing the default values inside of a camera modifier blueprint when referencing it in another blueprint results in a crash. Tested in 4.21, 4.22, 4.23 and 4.24 ...

thumbnail is updated at an unintended timing

UE - Editor - Content Pipeline - Content Browser - Oct 14, 2019

This seems to be because the OrbitZoom of ThumbnailInfo is rewritten by ResetCamera () when the viewport is opened. Is this correct processing? ...

Undoing after opening a bluperint will delete nodes in a math expression

UE - Gameplay - Blueprint - Oct 11, 2019

Math expressions fail to compile when performing an Undo after opening a blueprint ICE - wrong output link - ((1 + x) * (sin(myVar))) - (2.400000 / (rand())) ...

Issues with translucent material when using sceneColor node.

UE - Graphics Features - Oct 11, 2019

Issue seems to be linked to Eye Adaptation. Turning it off results in the sphere to be invisible. The attached image shows the output of the editor versus game mode (cooked or -game) This shader w ...

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

UE - Rendering Architecture - 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

UE - 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. ...

[CrashReport] UE4Editor-Landscape!ULandscapeComponent::FillLayer(ULandscapeLayerInfoObject *,FLandscapeEditDataInterface &) [LandscapeEditInterface.cpp:1898]

UE - LD & Modeling - Terrain - Landscape - Oct 11, 2019

Generated from CrashReporter Unhandled exception ...

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

UE - Editor - UI Systems - 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 ...