Unreal Engine Issues

iMac: Whenever _AMDDeviceDetached event occurs, the editor hangs.

The user is reporting that, on their iMac, Whenever _AMDDeviceDetached event occurs in the Activity Monitor, the editor hangs utilizing a reported 101% of the CPU. *The user claims this is 100% re ...

Cannot reference Branch point in CharacterAnimBP event graph

In CharacterAnimBP: After creating a new montage branch point you cannot reference it in the CharacterAnimBP’s Event graph until you close and restart the editor. ...

t.MaxFPS 0 locks FPS to 120 instead of unlocking it in Viewport

When unlocking FPS in Viewport it defaults to 120 instead of potential max FPS. If you do this during Launch the 't.MaxFPS 0' or 't.MaxFPS -1' commands unlock the FPS to the max the GPU allows in th ...

Broken assignation of materials when merging meshes

See the following UDN for a good visual explanation of the bug: https://udn.unrealengine.com/questions/512811/view.html Seems like this was introduced around CL 5639656. ...

Playing as a Pawn that is a Duplicate of a Blueprint Class doesn't create an Attribute Set

Creating a duplicate of a Blueprint class that has an AttributeSet seems to be interfering with the creation of the AttributeSet. ...

Material Billboard Component doesn't respect screen size when taking into account Camera FOV and AR

Material Billboard Component skews when Camera's Aspect Ratio is changed, and varies in size with changes to the Camera's Field Of View. Reported in version 4.25.3 (CL-13942748) and tested in versi ...

The Alpha Coverage Thresholds in texture settings doesn't work as expected

Light Propagation Volume does not work on Linux

It's easiest to see the change on the top of the table or back of the chairs when following the repro steps. I've attached screenshots of the Windows and Linux comparison with Intensity set to 20. ...

Gameplay Cue Notify Paths in Game Feature Modules don’t work when written in the ini file, only when added via AddGameplayCueNotifyPath()

The gameplay cue may work fine the first time. If this is the case, then relaunch the editor. It should then be broken, as the tag is no longer loaded after its creation. ...

Mover standalone backend allows non-persistent sync structs to carry over between frames

Only certain sync state structs are intended to persist between frames. These are configured via MoverComponent's PersistentSyncStateDataTypes array. There appears to be a bug in the way the standa ...