AutoComplete doesn't work on single C++ files in Code::Blocks 16.01

[Ilman]

Hey, all. First post here, so let me preface this issue:
I am a competitive programmer, which means that I often use Code::Blocks for its ability to create, edit and compile single, separate files fast(no projects). I've been using it for several years now and the auto-complete has always worked wonderfully out-of-the-box up until I updated to 16.01.
Now, whenever I write something(e.g. "std::", "#include <bits/") there won't be anything popping up. Occasionally a message shows up saying "The parser is still parsing files"...

I am fairly certain that either some setting has been changed in this version or it is a bug, which I would really like to be resolved, since it bogs down both my speed and my accuracy while coding.
All help appreciated. 

[raynebc]

Does it happen to work if you do create a project for your single source file?

[Ilman]

Does it happen to work if you do create a project for your single source file?

Interesting thing is that it doesn't, but creating a project takes up precious time while competing. I need the autocomplete to work fine on single files...