Unreal Engine Issues

Locking a selected Actor in a Level keeps the Actor highlighted when selecting another Actor

Locking a selected Actor in a Level keeps the Actor highlighted when selecting another Actor. ...

Default Value elements in a variable array inside a Game Instance Blueprint collapses after anything is entered

Default Value elements in a variable array inside a Game Instance Blueprint collapses after anything is entered. This does not occur in other Blueprint classes. Additional actions that will collaps ...

Blueprint based on custom Vehicle class can't be edited after closing/opening the editor

If a custom class named Vehicle is used as the base of a blueprint, closing and reopening the editor prevents the blueprint from being opened. The editor reports that the derived class is invalid. ...

Package game fails after creating plugin through editor

After creating a plugin in using the New Plugin button in the editor the project will fail to compile. ...

Attempting to Open a Widget Blueprint With Animation and Timeline Panels Hidden Causes the Editor to Crash

When you attempt to open a widget blueprint when you have hidden the animation and timeline panels, the editor will crash. There is a workaround: Window->Reset Layout will allow you to open the blu ...

Cannot Add Collision to an EQS Testing Pawn

Attempting to add collision to an EQSTestingPawn class is not possible, as the inherited capsule component seems to override any new collision. Simulating with the inherited capsule will cause the P ...

Cloth environment collisions with APEX clothing is not thread safe.

This looks like a thread safety bug that's been in the clothing system for a very long time. Essentially a skeletal mesh component does a transform update and attempts to update the collisions of a ...

iOS movie become laggy and crashes when played in iPhone 6/6s.

Movie play in iOS is laggy and crashes in some movie. This issue seems to be happening when the movie is played in umg widget. Tested in 4.14.3 4.15 Dev_Mobile Latest as of 2/24 Original UDN post ...

User project crashes after changing struct

Extreme hitching when using profile command (stat startfile) + other stat commands

Running the "stat startfile" command in a 4.19 project causes constant editor hitching. Running the same command in a 4.18 project does not produce any hitching by comparison. ...