Opera Mobile 43 and Opera beta 43+ not working with Outlook web apps

hntried

hntried

After upgrading Oera Mobile to version 43 and Opera beta to 43 (later to 44) they stopped opening my Outlook web app.

Details:
I use own company login page and two-steps login. The URL below redirects to the own login page;
I tried with data saving and add blocker on and off;
Worked well with version 42, own login page hasn't changed, can't cofirm for anything on Outlook/Office 365.

Expected behaviour: Enter URL: outlook.com/<own domein> - get redirected to custom login page - perform two login stes
Actual behaviour: Enter above URL - Opera is loading for over a minute - get no access to we page message or a blank screen.

P.S. Tried Opera mini as well. It does not return an error, but the redirect is still not working as I am sent to a completely another page - MS live portal