Unreal Engine Issues

Editor crash when compiling a blueprint containing `SetAvoidanceEnabled` call in construction script.

Mobile Preview dynamic shadows not showing on Mac

When Using mobile preview in the 4.7 preview build, or in the changelist provided, Dyanmic lighting is not showing shadows when changed to movable. Following the steps below, you will see no shado ...

Delete Unused Variables deletes variables used in Child Blueprints

[NickW] Should perform a search in children, at least warn if this will break children. — Delete Unused Variables deletes variables used in Child Blueprints. Note: Not only child blueprints. If ...

Adding a new widget class to a 3D widget causes a crash

When clicking the button to add a new class to a widget component via the [+] button the engine will crash ...

Editor Dirty flag not updated in Windows task bar until focus is returned

A Blueprint marked Dirty will appear in the Windows Task Bar with an asterisk beside its name. Saving this Blueprint will remove the Dirty flag, but the Task Bar will continue to show the BP as Dirt ...

Moving an Actor using the Transform controls in the Details panel with Realtime disabled leaves the Widget in its initial location

Moving an Actor using the Transform controls in the Details panel with Realtime disabled leaves the Widget in its initial location. Clicking off the Actor and then selecting it again restores the ...

Crash generating grass for landscape with XY offset map

Landscape grass map generation crashes if the landscape component in question uses an XY offset map. --------- Fatal error: [Link Removed] [Line: 646] Rendering thread exception: Fatal error: [Lin ...

Clicking the GameMode Override dropdown in the World Settings tab crashes the editor

Clicking the GameMode Override dropdown in the World Settings tab crashes the editor. Also occurs with any of the sub-options for the GameMode. Does not appear to occur if there is not already an ex ...

No visual updates when adjusting the curve editor in UMG for the first two points on the timeline

When Switching the curve editor to cubic interpolations for example moving the blue handles will not change the curve. However, if a third point is add this function works as intended from the 2 poi ...

Random Stream variables in the GameMode are reset every PIE

Random Stream variables in the GameMode are reset every PIE. Workaround is to use Set Random Stream Seed before using the Stream value. Reproduced in 4.7.6, 4.8.1, and Main (//depot/UE4/Promotable ...