Comment 1 for bug 1307764

I can confirm this bug. When tooltip is shown it receives focus and "eats" first key.

Gtk3 version is affected, it's just not too noticeable most of the time.
1. Click on password entry (focus it)
2. Move cursor to any widget with tooltip (users combobox)
3. Focus moved to tooltip - press any key, it is will be "eaten"

Fixing must be simple (If I don't missed something), I will upload patch soon.