Steps to Reproduce

A use the mouse wheel while the cursor over the slider knob area
B use the mouse wheel over the knob input area
C click inside the slider input area
D hover the slider input area
E use the mouse wheel to scroll the whole page (outside the slider area)

different sequences of A B C D have varying fail behavior in different browsers

Current Result

chrome/edge: D,E (page stops scrolling)

FF: A (page scrolls instead of slider value)
FF: B (page scrolls instead of slider value)
FF: C B (slider moves, doesn't happen in chrome/edge)

IE11: A (both the page and the slider move)

Expected Result

consistent behavior
page scrolling should never remain interrupted

Debug Info

Root Cause

Workaround