Montage Editor: Mouse Wheel Cannot Scroll to the Bottom When Many Notify Tracks Are Added

When a large number of notify tracks are added in the Montage Editor, the mouse wheel scroll does not allow the user to reach the bottom-most tracks.

Only by manually dragging the scrollbar can the user view the last tracks.

This appears to be a bug in the scroll handling logic of the notify track list UI.

Steps to Reproduce:

Open a Montage asset in the Montage Editor.

Add a large number of Notify Tracks (e.g., more than 10).

Try scrolling down using only the mouse wheel.

Observe that the bottom-most tracks are not visible unless the scrollbar is manually dragged.

Expected Behavior:

Scrolling with the mouse wheel should allow access to all notify tracks, including the last ones, without needing to use the scrollbar directly.

재현 방법

Hey there,

Thanks for raising this, I’ve logged an issue: https://issues.unrealengine.com/issue/UE-306174. It may take a bit for it to appear.

Unfortunately, I do not have a workaround other than the awkward scroll bar drag that is there today.

Dustin