Problems with "reconnecting" signals

Hi, I've got problems with "reconnecting" signals, which means e.g. I connect a button, then disconnect it in its callback function and after that I connect it again (to the same callback function) - still in the same callback function. But after reconnecting the signal it won't be emitted again (when button is clicked). Even if I'm heading to another callbackfunction - which doesn't exist - it won't throw a warning. Although a new handler_id will be returned. Can somebody help me? Thanks