IDO not working properly when provided with initial file

Question

IDO works fine in my emacs setup except when I try to run a command that provides a default file, like diff or tag-search or even load-file. Here's a gif that explains the problem better than I do:

When I run one of the commands mentioned above I can't even press enter or try to drop to regular find-file. List of packages I have:

• auto-complete
• find-file-in-project
• ido-hacks
• ido-ubiquitous
• ido-vertical-mode
• idomenu
• smex
• powerline

Answer 1

You need to activate ido-everywhere:

(ido-everywhere 1)

It makes a difference when, for instance, using 'ediff'.

(If that does not work, something migth be going on with some of your other packages)