Unreal Engine Issues

Details customizations with object references can cause map loading to fail.

This crash can be reproduced by adding a graph editor to a details customization.  This crashes because the graph editor is holding a strong reference to the graph object on the actor component duri ...

Draw Debug String appears to render in the wrong location

Draw Debug String appears to render in the wrong location when changing the scaling for a monitor containing the editor. ...

UMG Animations do not play while the widget is offscreen

Currently, widget animations are updated in UUserWidget's NativeTick. Widgets do not tick when they are offscreen (as intended), but as a side effect, animations are paused and will resume once the ...

Adding and Removing a Blueprint Interface Output Parameter will cause warnings/errors when compiling in the Implementing Blueprint Actor

The editor appears to become confused when adding and removing output parameters in a Blueprint Interface, multiple times, then compiling the implementing Blueprint Actor Class, which causes the edi ...

Motion controllers appear misaligned when using the oculus touch controllers through steam VR

Touch controllers for oculus appear misaligned when using the Oculus via Steam VR. The controllers in game do not line up with the position provided by steam VR. ...

Locked actors still moveable in VR Editor

Actors that are locked in the regular editor are able to be moved in VR Editor. Reproduced in 4.17.2 CL 3658906, 4.18.2 CL 3794801, and 4.19.0 P1 CL 3837072 ...

Root motion can accumulate large force until finally extracted

Root motion can accumulate in some cases and then apply a huge force when it ends. See https://udn.unrealengine.com/questions/411340/root-motion-accumulated-while-unused.html ...

Collision does not work on Static Mesh created from BSP

After applying a Linear Stair brush to the editor and creating a Static Mesh from that brush, then setting its Collision Preset to BlockAll, the third person character is not able to walk up the sta ...

Objects are not cleaned up after gc when dragging a propery on a blueprint that reruns construction scripts

It appears that the editor's memory usage can jump by as much as a 1GB when using a spinbox in the editor. This also has the side effect of causing the editor to freeze/hang temporarily Note: The j ...

Naming a category for a function the same name as a function can cause the My Blueprints tree to display incorrectly (making the category heading look like a function)