Great new feature for ux!
We need the same improved UX on mobile. Collapsed sections as default view on mobile as well.
The same goes for hidden unused custom fields from the parent task, which simplify the interface on desktop but are not default on mobile.
I highly suggest prioritizing simplifying the mobile experience at the same time. Especially when new features and standards are implemented to the desktop that would provide a similar value to the mobile experience.
Please can you simplify the mobile experience the same way that you have done to the desktop experience?
Hide parent custom fields as standard and enable collapsed sections as default view in projects.