Unreal Engine Issues

Left-Clicking in an Ortho Viewport While Using a Custom Editor Mode Causes the Mouse to be Hidden

Left clicking in an orthographic viewport while using a custom editor mode, such as the foliage tool, will cause the cursor to disappear. ...

Move 'Scale is not valid' warning to MessageLog to make it more noticeable.

Memory leak when comparing scale value with 0 on transform. It appears that the memory used by the editor increases by 25-50 mbs while comparing the scale to 0. Regression (no) issue (does) occur ...

Alembic Geometry Cache crash with multiple meshes

Importing an Alembic geometry cache will cause a crash with multiple assets. Test asset attached that can reproduce this. When I tried with a couple of simple shapes from 3Ds Max I did not get the ...

SubInstance AnimInstances may not be updated in all necessary places inside SkeletalMeshComponent

After scanning through SkeletalMeshComponent, it looks like there are several places where AnimInstance is updated but SubInstances are not. This can potentially cause states to get out of sync, and ...

Sequencer stop node does not return camera to player

Sequencer stop node does not return camera to player The error only occurs when exiting the sequence trigger volume before the sequence has completely finished. ...

Attempting to add a custom Physics Constraint Component class to a project will result in the build failing

Failed to Zip Projects

When trying to zip the project the editor fails almost immediately. The output logs shows as follows: UATHelper: Zip Project Task (Windows): Running AutomationTool... UATHelper: Zip Project Task (W ...

Disabling 'Use Landscape Lightmap' option Skewing Procedural Foliage Instances

Disabling the 'Use Landscape Lightmap' when using procedural foliage, will skew the placed instanced meshes. Regression? Yes, this issue did not occur in the 4.13.1 release. ...

Cannot save a duplicated level in a blank project

Cannot save a duplicated level in a blank project. ...

Standalone Window Size Not Displaying In Fullscreen

Setting the standalone window size does not seem to have any effect, and using the -fullscreen parameter does not display the window in fullscreen. Setting the Standalone Window Size to 1920x1080 a ...