Office/Microsoft365 is getting worse and worse year by year. It's clear the designers of the company doesn't use a 13"-14" laptop, because the work space in the different versions is getting reduced to a size that is very very very unpractical.
This new decision goes in the same direction: now we have 1" less space because in the left margin there are ¡¡¡ 4 !!!, ¡¡ ONLY 4 !!, icons... that before were down in horizontal, occupying NOTHING.
I don't understand designers are occuped in such stupid details that were no problematic, instead solve far more important issues, as: imposibility of change/alternate capital and lowecase letters in a text in Excel, the impossibility of identify differents accounts operated in outlook by colours or something else, the common errors in outlook (one mail send from one account goes to the mailbox "send" of other account, mails from validated senders -even contacts- going to spam, the appointments in outlook are created not from the default account...), etc. etc.