Steps to reproduce:

1. Import scrollview-horizontal-nesting.uxml in a Project.
2. Open in the UI Builder and enter preview mode.
3. With the mouse hovering a Blue section, start scrolling down with the mouse wheel.
4. Notice the change in scroll direction when mouse hovers on a Red (nested ScrollView with horizontal scrolling only)

Actual results: The vertical scrolling starts moving horizontally until it reaches the end, then resumes scrolling vertically.

Expected results: The ScrollView keeps scrolling vertically and requires Shift+Mouse Wheel to scroll horizontally, no matter the state of the ScrollView.

Reproducible with versions: 6000.5, 6000.4, 6000.3, 6000.0

Not reproducible with versions: -

Can’t test with versions: -

Tested on (OS): MacOS

Notes:

• In the gif + mov, using mouse wheel only, without any button pressed.