Unreal Engine Issues

InterpCurve<T>::FindNearestOnSegment can return NaN or invalid results

We've had two reports on UDN where FInterpCurve<T>::FindNearestOnSegment returns either "NaN for the final value in the DistancesSq array during the first Newton iteration step." The licensee on on ...

In-editor hitch when deleting one actor in a world with many loaded actors

When editing a level with many actors (1000+), deleting an actor results in a noticeable hitch: the editor becomes unresponsive for seconds. This hitch becomes longer the more actors are loaded and ...

The return value of int64 FMath::RandRange() is biased

Can not affect "r.SetRes" command in editor new window

When playing in "New Editor Window" mode, entering the r.setres command does not change the screen size. This worked in UE4.27, but no longer works in UE5.0. ...

Unnamespaced UnrealMathUtility.h macros clash with other headers

Reported here: [Link Removed] > See this commit: > > https://github.com/EpicGames/UnrealEngine/commit/acd754e12dc9a7ffc7f173c8433a6bafc0262b51#diff-b18d4f9b879748fdacff2caa885b231e8c9e0b899d90d5d ...

Core Class Redirect doesn't work when converting from a C++ class to a BP

The Export map will properly be updated but the creation of the import will fail with SourceIndex == INDEX_NONE From MarcA:  I'm guessing the import source index is always none for native classe ...