Not a bug.
In views you'll have a scroll bar but in reports it will show you the place available on the page.
This is because Views are considered for handling in real time and Reports are meant to be exported,
If you perform export to PDF you can go in that page to view settings, select "Split table across multiple pages", select the desire table and export. It will split the table (and only that table) for more pages until it reaches the end or the limit of pages if marked.
This is by design but I'll try to raise the idea.
Amir
Kind regards, Amir Senn