I'm using Qt Creator 3.1.1 with FakeVim mode enabled.
When the completion popup appears with the desired function already as the first one, I have to press Enter twice in order to insert text. The same thing happens when I want to insert more letters before hitting Enter. I have to press first key twice, than everything goes as expected (following keys require single presses, Enter too).
ex. I entered avform and the popup appeared. If I want the first tooltip AVFormatContext i press Enter twice. If I want avformat_smthing I need to press aaform_ cause the first a will like change mode back to insert (but not really as I'm still in INSERT mode).
I wonder if anybody stumbled upon similar problem/inconvenience, and what can I do to change QtCreator behavior.
It seems like it's a known bug, and it hasn't been fixed yet. It only appears in newer versions of Qt-creator (>2.8.1). Partial fix is to disable autocompletion or unmark Pass keys in insert mode but both options have side effects (ex.Ctrl+N opens completion popup, but the text doesn't get inserted).
Link to: Issue on BugTracker for curious.