Unreal Engine Issues

Crash when reverting to the default material in the static mesh editor

The editor crashes when attempting to revert the material on the cube back to default which is the World Grid Material. The cube is already set to WorldGridMaterial so I am not sure why the arrow ...

Crash when using "Set Key Time" on an animation key in UMG

If the user right clicks a key in the animation timeline in UMG and uses "Set key time" the editor will crash. [Link Removed] ...

Crash on applying animation modifier for some assets

When removing curves on some assets, a crash can occur. This seems to be due to const FSmartNameMapping* CurveMapping being null and dereferenced within UAnimationBlueprintLibrary::RetrieveContainer ...

Opening a Niagara asset that references a disabled plugin (Chaos Niagara) can crash the editor

Opening a module with references to a disabled plugin can crash the editor.  ...

SceneTexture:WorldNormal causes decal to ignore Emissive Color

SceneTexture:WorldNormal causes decal to ignore Emissive Color.  ...

Crash when attempting to revert a Child blueprint from overriding its parent's function while it also has a child of its own

When reverting the change of overriding a function from a blueprint's parent, the editor will crash if that blueprint has a child of its own. Regression?: No This also occurred in 4.16 ...

If a Blueprint made from a class using PostLoad is saved immediately before and after PIE, a crash can occur

Using PostLoad in a class that has a Blueprint derived from it can result in a crash if the Blueprint is saved immediately before and after PIE. CrashReporter Link: [Link Removed] ...

[Crash]-[Reimport] - Crash on reimporting CAD file with deleted light sources

Editor crashed on exporting a skeletal mesh twice after garbage collection occurs

Issue was occurring with wildly varying repro steps, after speaking to Jurre and enabling gc.CollectGarbageEveryFrame 1 it was easy to conistenty reproduce this issue. note: I was getting this iss ...

Editor crash on blueprint compile that contains edited BP Struct

When a blueprint graph contains a "Make Struct" node for a blueprinted Struct, changing any pin's type causes the editor to crash when the blueprint is compiled. Regression: No - same behavior occu ...