Dispatcher event called from actor blueprint needs to compile in a specific order

Gameplay - Oct 15, 2019

Dispatcher events being called from actor blueprints have to be compiled in a specific order to successfully call the dispatch event.  ...

Child Blueprint components become broken in sequencer when "Run Construction Script in Sequencer" is checked

Sequencer - Oct 15, 2019

When enabling "Run Construction Script in Sequencer" on a Blueprint Child Actor and having "Rerun Construction Scripts" turned on in Sequencer, the Child BP's properties become inaccessible in Seque ...

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

Gameplay - 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 ...

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 ...

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

Rendering - 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

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. ...

"Pausing" A TimeSynth causes a crash

Audio - Oct 10, 2019

Clicking and holding anywhere on the editor outside the viewport when PIE causes a crash. The AudioRendering thread throws the following assert: Assertion failed: FreeClipIndex < PlayingClipsPool_Au ...

UnrealMathTest fails when compiled with VS2019

DevTools - Oct 10, 2019

A crash or breakpoint is triggered when building UE4 with Project Files generated with -2019. Typeinfo.h was changed in MSVC v14.23 to just be typeinfo. ([Link Removed]) There is a pull request t ...

Unable to delete levels with Particles in them

Gameplay - Oct 9, 2019

The engine is unable to Level that has a Blueprint actor with a child actor component that has a particle system component. The follow message pops up: World /Game/LevelName.LevelName is in use. — ...

Linear color preview for the default opacity appears incorrect

Tools - UMG - Oct 8, 2019

The color preview on the "Set color and opacity node" does not reflect the correct opacity setting that is give by default. ...