Class DocString not shown with the Quick Documentation

Dear all,

I've a problem with the Quick Documentation for a couple of classes I wrote. The classes consist of a base class and a top class as illustrated with the examples below.

The top class is instantiated in the main script

I expected to see the documentation for the base class when placing the cursor on the string 'base_inst' in the main script and then pressing Ctrl+Q. But I get a 'No documentation found' message instead. I also tried to re-index by using the 'Invalidate cache' menu, but without success.

What am I missing here?

Best regards and thanks in advance

S. Rievers