I love tags in Gmail - they are a brilliant way to organise and manage emails. This past week, Gmail introduced a new feature - inbox tabs - some sort of an automate sort of emails based on sender/content.
Normally, I don't have issues with most changes in Gmail - but inbox tabs just didn't work for me. During the week, I mostly use the Gmail app on my phone - and I kept getting notification of emails that I couldn't see - because they were automatically moved to a different tab; unless I went and changed my view. And there were quite a few inconsistencies in how emails popped up in different tabs - some LinkedIn emails went under "social" while others went to "promotional".
Perhaps I use my Gmail differently - I minimise the number of active emails on my Inbox, and archive and tag everything else. What really annoyed me - unlike tags, in the tabs view, I could only ever have an email in one view; so I ended up trying to find emails across multiple tabs. Eventually, I just switched it off.