iTerm2 - Disable same commands across tabs

Terminal app in Sierra keeps crashing so I switched to iTerm. But iTerm tabs behave weirdly. Whatever I do in one tab automatically replicates across all open tabs! Am I missing some setting to turn this off? Please help.

Attached a gif showing that I open 1 file in tab 3, upon switching to tabs 1, 2 I see the same file open.

Solution 1:

Watching your tab titles in the GIF, it looks like you're using Move Tab Left, which is moving the tab you opened vim in to the left.

What you need is Select Previous Tab to change tabs, or even CMD-1 to move to tab1, etc.

Solution 2:

In the Menu: Shell > Broadcast Input > Send Input to Current Session Only