Background Information: When discussing about Mobile Web Editor at 2022 Community Wishlist https://meta.m.wikimedia.org/wiki/Community_Wishlist_Survey_2022/Mobile_and_apps/Option_to_select_non-Javascript_editor_on_Mobile_Web , it's noted that some feel the default Mobile Web editor feel slower than the non-javascript one, despite that one would require loading a whole new page and thus is actually timed to take longer to finish loading.
From the discussion, it have been identified that the editor loading animation effect is probably a reason behind why people have such negative impression against the default js-enabled mobile web editor, thus I think the animation effect need to be improved in order to remove such laggy feeling despite it actually load up faster than the alternative mobile editor.