Unreal Engine Issues

Crash Occurs When Switching Value on TMap

The editor seems to be intermittently crashing when switching the value of a Map variable. I've only been able to get this to occur when switching from one type to a Vector at this time. ...

Disabling LQ lightmaps causes crash on mobile preview

Evaluate ClampedPow material function

ClampedPow seems to have been added as a way to tackle common compile warnings and edge cases (particularly NaNs), but the code shouldn't be calling both an abs() then a max(). This causes negative ...

DoNotCreateDefaultSubobject is not recognized when an actor is duplicated

Adding DoNotCreateDefaultSubobject to a class after placing an instance of that class in the viewport will fail to be recognized when duplicating the placed instance. This is not a hot reload issue ...

Ensures when packaging a project for Windows

Packaging a blueprint project fails due to multiple ensures. This does not occur in UE4/Main. ...

Crash occurs when right-clicking in graph of a blueprint with a null parent class

REGRESSION No Crash occurs when the user right-clicks in the graph in a blueprint that has a Null parent class. ...

No warning is shown when a disabled mobile shader permutation is required for rendering

Pin wires do not connect correctly after collapse to function and duplication

Pin wires do not connect correctly after collapse to function and duplication. Any node can cause this issue, I used an INT variable because it was quick to test with. Regression: This issue affect ...

Crash when creating a key in a blackboard with a name longer than 1024 characters

Black board key names that are longer than 1024 characters will cause a crash ...

Crash when element is added to a map variable with unhashable key

Crash when element is added to a map variable with unhashable key. An error is thrown on compile but an element can still be added under the Details panel of the variable. Crash Reporter: [Link Rem ...