Unreal Engine Issues

Reimporting creates new Material Slots instead of overwriting.

CHANGELIST: 2114974 BRANCH: UE4 - Main DESCRIPTION:                              Using the Reimport LOD1 drop down in the Static Mesh Editor will create new material slots each time instead of ove ...

[CrashReport] UE4Editor_Engine!UHierarchicalInstancedStaticMeshComponent::BuildTreeIfOutdated

This is a common crash occurring in the 4.16 release. It seems to be related to applying a material to a mesh that is being used in Foliage. Crash Reports are spread out among many different Crash ...

Deleting struct in Windows Explorer leaves dirty traces in BPs.

UND: https://udn.unrealengine.com/questions/559972/invalid-map-in-blueprint-unable-to-be-deleted-urge.html If you delete a struct in Windows Explorer manually, then open a project/BP, it will ask t ...

Material Quality Level not working with Layers

Mesh Paint mode's Texture Paint has obvious artifact with UV seams

Mesh Painting Texture Paint tool can miss some pixels along UV seams, even with "Enable Seam Painting" set to True. This appears to be because of the difference between rasterization and sampling. ...

Activating physics on a component will break movement for the component

Setting simulate physics for a component of an actor will cause that component to not react when the actor root is updated. ...

Data Only blueprints Class Defaults page become uneditable during runtime

During runtime, a data only blueprint's class defaults tab becomes greyed out and uneditable during runtime. The values for specific instances can still be edited via the detail's pane. ...

Mesh Painting sometimes fails to paint the closest face in the hovered area

Sometimes it's not catching certain polys as vertex paint targets. Looks like it happens when there's more than one layer of forward facing geometry over the highlighted area, and it just takes the ...

Editor crashes when the "Find in Blueprints" dialog runs its indexing task after any SlowTask was canceled by the user

If any SlowTask is canceled by the Editor's user, and later on the "Find in Blueprints" dialog is opened and needs to perform its async indexing task, the Editor crashes on thread FAsyncSearchIndexT ...

Enabling Use Pawn Control Rotation on a SpringArm component does not set the rotation values to zero, and subsequent rotation is not allowed after the setting is disabled

Enabling Use Pawn Control Rotation on a SpringArm component does not set the rotation values to zero. Subsequently disabling Pawn Use Control Rotation make rotation of the component impossible until ...