Unreal Engine Issues

Materials Added to an FBX Will Not Be Added When Reimporting

Adding a material to an FBX with a Multi/Sub-object material, then reimporting the FBX will not import the new material. The material element will be added to the mesh but the material applied will ...

FObjectReplicator::ValidateAgainstState may validate against the wrong buffers

In 4.14, changes were introduced to share replicated state between objects on the server (Shadow State) this was done to allow sharing property comparisons to determine when objects needed to replic ...

Movement Tolerance for Spawn Per Unit Does Not Function

Motion tolerance for Spawn Per Unit does not affect the particle system. Even if the vaules are set very high. Found in 4.18 CL# 3832480, 4.19 CL# 4033788, 4.20 CL# 4369336, 4.21 Preview 2 CL# 4472 ...

Maximum Resolution Windowed Mode Covering Task Bar

Using the maximum resolution available on the monitor for windowed mode results in the window overtaking the Windows taskbar. ...

Packaged Builds with DX12 Crash on 2nd Start

Running a packaged game with DX12 will crash on launch every second start and after. If you delete the files with the .ushaderprecache extension that are in the ProjectName/Saved folder the exe star ...

Editable text box caret blinks slowly when manually setting focus

For some reason, it appears that manually setting the focus (whether it be user, keyboard, or both) on an editable text box in UMG causes the caret to blink slowly. However if you were to manually s ...

Duplicating an inherited Blueprint float variable defaults it's value to 0.

When creating an Actor Blueprint (Testbase), and creating a new Blueprint Actor that inherits from Testbase (TestBP).  We can drag an instance of TestBP into the World. If we go back into the Parent ...

Datasmith CAD Import Texture Scale Is Smaller Scale Than Expected

The texture scaling of an imported CAD file is much smaller than that of a standard engine primitive or imported fbx.  Found in 4.19 CL# 4033788. 4.20 CL# 4369336, 4.21 Preview 2 CL# 4472090 ...

FGenericPlatformMemory::OnOutOfMemory should be broadcasting GetOutOfMemoryDelegate instead of GetMemoryTrimDelegate

Launching on IOS, sessions do not appear in the Session Frontend

Licensee reports: Dug into this further and our iOS devices aren't receiving any of the handshake messages sent by the Session Frontend (or any other UDP messages for that matter) because multicast ...