For me, bookmarks are one of the most important features in a script editor, once I have large scripts and I need to go back and forth quickly.
But I didn’t find anything similar inside Studio.
Any chance to have any kind of bookmark jump?
Breakpoints 
This could actually work though
Or you could leave a comment at the line you last left off like -- BOOKMARK, then ctrl + f for it, but if you want some native support for it you should open a feature request