Too many elements are disturbing the user experience by not using standard good practices.
Read explanations on the custom screenshots.
NB: this subject is probably hard to find since people look mostly for lacking "features", but stay assured that enhancing these little UI/UX elements will give a far smarter feeling.
+ I would also link this subject to the cross-platform limitation stated here : "Lack of standardization between mobile and desktop" @ https://feedback.clickup.com/feature-requests/p/lack-of-standardization-between-mobile-and-desktop