Physics Constraint Actor Won't Disable Collision Between Two Actors That Are Already Colliding

Physics - Feb 17, 2020

Meshes that are colliding that are set as constraint actors don't follow the Physics Constraint Actors "Disable Collision" parameter if they are colliding prior to being set as constrained actors. ...

D3D12RHI crash using laptops internal display

Rendering - RHI - Feb 17, 2020

Running the engine with DX12 enabled on MSI GS75 Stealth 9SF results in a D3D crash when using the internal display on the laptop. *Note: Unable to reproduce the crash. The user receiving the cra ...

PIE crash due to non-empty ULevel::DestroyedReplicatedStaticActors array

Networking - Feb 17, 2020

It's possible to end up in a state where some entries were saved in ULevel::DestroyedReplicatedStaticActors, which causes a crash when PIE starts up. I'm not sure how entries could end up in this l ...

Adding multiple streaming levels to the world in a single frame can potentially exceed time slicing budget

Gameplay - Feb 17, 2020

If a level uses most of the time slicing budget but not all, the next level in the list will begin to load and could potentially use the full time slicing budget. In the worst case scenario, you cou ...

Sound Quality is worse after import

Audio - Feb 17, 2020

After importing a sound file, it's sonic characteristics are changed and the sound is not the same as the original. This leads to inconsistency. The sound is the same with Compression set 100. Two ...

Steam VR - Wrong Key returned on Action Mapping

XR - Feb 17, 2020

VR InputAction returns wrong Key. Did not reproduce with Rift Confirmed in 4.26 MAIN @ CL 11451261 ...

UMG Crashes When Using "Create Dynamic Material Instance" With An Optional Name Twice

Tools - UMG - Feb 17, 2020

When using an Optional Name parameter in Create Dynamic Material Instance while using the same Optional Name twice in UMG the engine crashes. I have tested this in a actor blueprint that applies th ...

Skybox Textures Have a Seam When Using a Cube With Inverted Normals

Rendering - Features Teams - Feb 14, 2020

Skybox textures can have a seam when using an inverted cube for a sky. Attached is an example 4.24.2 project. Note: One of the attached seam screenshots is hard to see unless you expand it. Found ...

Get Niagara Emitter Vec3 Attrib Results in Hard Crash

Rendering - Niagara - Feb 14, 2020

Also tried it out by replicating the setup in an Actor blueprint with the same result. ...

Texture sample offset results in pixelization on Android + Quest

Platform - Mobile - Feb 13, 2020

Offsetting UVs can result in blurred texture on Android/Quest Confirmation in MAIN 4.25 @ CL 11384989 blocked by UE-86577 ...