Directional light triggers 'too many overlapping lights' error in forward shading

UE - Graphics Features - Sep 24, 2019

The underlying reason seems to be that the stationary lights require SM channels for casting shadows  from movable objects and they are assigned channels 0,1,2 by lightmass (or somewhere along the w ...

NavMesh "Enable Drawing" option is not saved

UE - AI - Mar 7, 2015

USER DESCRIPTION: Every time I check "Enable Drawing" in project settings, save all, close the editor then open it again -> Enable Drawing is unchecked. Why? Is there some other place when this opti ...

Default Value elements in a variable array inside a Game Instance Blueprint collapses after anything is entered

Tools - Jul 16, 2015

Default Value elements in a variable array inside a Game Instance Blueprint collapses after anything is entered. This does not occur in other Blueprint classes. Additional actions that will collaps ...

When move selected foliage to level, Foliage can not move to level.

UE - World Creation - Worldbuilding Tools - Foliage - Jul 18, 2017

With 4.15, I can move Foliage to "Sublevel B", but I can not move it with 4.16. It seems to be affected by the update in 4.16 (New: When moving a foliage asset to a new level, you will now be prompt ...

Logging out and then logging in as a new user results in slate creating multiple Slate User IDs

UE - Gameplay - Input - Jul 28, 2023

I believe this is happening because when you change your logged in user, the Slate Application will automatically create a new second slate user with an ID of 2. This is bad because the Slate App is ...

Using save all after moving a newly created asset to another folder will cause the asset to also exist in its original location

Tools - Dec 16, 2016

When you move an asset that has been freshly created and not yet saved, it will leave behind information that will get saved by Save All. This saved data isn't visible in the editor but is present i ...

After upgrading to 4.7 from 4.6, one of the Blueprints in this user's project will not save its Replicates setting

UE - Gameplay - Blueprint - Mar 4, 2015

One of the Child Blueprints in this user's project will not save its Replicates setting. The Blueprint (apa_room01) is a child of MasterRoom, which has Replicates enabled. When apa_room01 is first o ...

Dragging to Change Variable Attached to Empty Reroute Node Causes Freeze

UE - Gameplay - Blueprint - Apr 25, 2016

Attempting to change a variable that is connected to a node and an empty reroute node by dragging a reference on top of the existing reference causes the editor to freeze. The user provided a vide ...

Crash Occurs In Skeletal Mesh Editor When Adding a Bone Transform in a New Animation Sequence

UE - Anim - Runtime - Apr 22, 2022

Occurs 3/3 times Regression does occur: tested in //UE4/Release-4.27.2  EGL Live @ CL 18319896. No crash occurred.  A crash occurs in the Skeletal Mesh Editor when adding a bone transform to the A ...

Crash when using a Self reference with a Custom Event variable

UE - Gameplay - Blueprint - Jan 19, 2017

Crash when using a Self reference with a Custom Event variable that is using Pass By Reference. The crash only seems to occur if the setup was created in the Player Controller class. This was origi ...