aqFileSystem.CreateFolder returns true but didn't create folder

First of all, I'm using TestComplete 11.20.1491.7, I'm on Windows 7 Business 64 bit SP1 and I'm scripting with python.

When using environment variables in your path, aqFileSystem.CreateFolder returns true but the folder does not appear to be created.

Example: aqFileSystem.CreateFolder("%temp%\\folderName")

Result: Returns true, but no folder appears

Example: aqFileSystem.CreateFolder("C:\\Users\\lagrouw\\AppData\\Local\\Temp\\folderName")

Result: Returns true, folder appears

Same result for %systemdrive%, so it's not user-related (in case TestComplete runs as a different user for some reason)

I couldn't find a known issue on this and it's possible to work around it but it's really, really inconvenient. If i'm doing something i'm not supposed to or if there's something i can do to fix this i'd love to hear it!