Using Classic Outlook on Windows for personal email, calendar, and contact management
The missing arrows occur in every browser, in Outlook, whether it's Microsoft, Chrome, Puffin, and others. It does this on all my PCs, tablets, and phones. It all started when Microsoft decided to sneak in an ad as the very first email entry each time you start up Outlook Live. The arrows were available for a short time but now seem to be gone totally. BTW there is a way to get rid that bothersome first ad by clicking on the little blue triangle and opting out of the ads. It doesn't get rid of them entirely but does reduce their frequency.