Unable to zoom in/out the timeline in Cut using Alt+mouse

Hello,
In Edit mode, I press Alt and I can use my mouse wheel to zoom in and out.
The same functionality is not working in Cut.
Why does the consistency break here? What I am doing wrong? Thanks for your help!
In Edit mode, I press Alt and I can use my mouse wheel to zoom in and out.
The same functionality is not working in Cut.
Why does the consistency break here? What I am doing wrong? Thanks for your help!