CtrlP no longer jumps you to the file if it's already open.

This makes it easier to maintain multiple Tab workspaces involving the
same files. For example, in one workspace you want a class and its spec,
and in another tab you want to see that class in context with another
collaborator. This allows you to open the window multiple times.

vim/settings/ctrlp.vim

@@ -14,6 +14,10 @@ endif
 " controller
 let g:ctrlp_by_filename = 1
 
+" Don't jump to already open window. This is annoying if you are maintaining
+" several Tab workspaces and want to open two windows into the same file.
+let g:ctrlp_switch_buffer = 0
+
 " We don't want to use Ctrl-p as the mapping because
 " it interferes with YankRing (paste, then hit ctrl-p)
 let g:ctrlp_map = ',t'