Until recently, Twitter timelines ran in reverse chronological order, and we liked it that way. Timelines had an immediacy and democracy long absent from Facebook -- anyone could cut to the front of the feed. But on February 10, Twitter announced an algorithm that pushes the "best" tweets since your last visit to the top of your timeline. If you're unhappy about this update, there is a permanent fix, whether you're using Twitter on the Web or in a mobile app.
Twitter on the Web
On Twitter online, click your profile icon at the top right of the window, then scroll down the menu and click Settings. Under Content, head to Timeline and uncheck the box next to "Show me the best Tweets first." Click Save Changes.
Twitter for iOS
In the iOS Twitter app, go to your timeline, press the gear icon, and tap Settings in the dropdown menu. Tap your account name and then, under Timeline, Timeline Personalization. Toggle off "Show me the best Tweets first."
Twitter for Android
In the Android app, tap the top right corner menu icon, select Settings, then Timeline. Toggle off "Show me the best Tweets first."