Completion popup not showing if parenthesis present

Hi,

I have no idea why the completion popup doesn't show when there is a right parent juste after the dot:

When there is no paren, it works perfectly:

I know that the CompletionProvider is called in both cases, and that the CompletionResultSet is populated with the same data in both cases.

What is missing ? only the right parenthesis has a side effect on the popup.

I have no idea how to fix it, any help is welcome.

Thanks.