The autocomplete suggestions window stays open if I switch from the scripting tab to the console or memory tab and blocks me from seeing some of the console output or memory content.  The only way to close it is click one of the suggestions, which still puts the selected option in the script (this tripped me up once with an unexpected variable hiding in the code) or going back to the script tab.  I'm using the Steam client on Windows 7.  I'll put a screenshot of what I'm talking about below.

TL;DR: One minor UI annoyance in an otherwise awesome game