> After installing Rubberduck, I started to notice that sometimes, I would close a workbook and it would remain visible in the Project Explorer of the VBE. And if I were to reopen the closed file, I would end up with 2 entries for the same workbook (with the latest being the one at the top).
![vba project won t close](https://user-images.githubusercontent.com/31558169/35141102-ced10714-fcc7-11e7-816f-7007a1af6470.png)
To make sure that this was indeed caused by Rubberduck, I did some tests w