In the traditional version of Outlook, when you have done a search with the email search engine, then a list with the emails associated with this keyword search is displayed, as it also happens in the new search engine of the BETA version of Outlook mail.
The problem is that, when returning "backwards" to the previous page, the old version of Outlook shows the screen with the list of searched emails, and in the new BETA version, unfortunately it goes directly to the HOME-Tray page of entry (u that was previously visited).
This is a big mistake in the new BETA version, because it forces us to search again a lot of times, as many emails as we want to see (unless we click and right click "open in a new tab".) The last trick does not work because the web has active special functions on the right button, the current search engine is very unusable from the point of view of the UX-Usability.
Another problem encountered is that during the writing of a keyword in the search bar of the BETA website, it is that during the writing, and before the end of the complete word, the lower-up arrows of the keyboard can not be used, for select the recommended term from the lower list. The behavior of the keyboard arrows for the selection of recommended search terms is erratic and imprecise.
I hope this can be reviewed by Usability engineers. Regards!