Here are the steps to reproduce the issue:
1. Add a wiki portlet
2. Go to All Pages
3. Click Add Page
4. Add a Page with the following title: lllllllll1lllllllll2lllllllll3lllllllll4lllllllll5lllllllll6lllllllll7lllllllll8lllllllll9llllllll10llllllll11llllllll12llllllll13llllllll14llllllll15llllllll16llllllll17llllllll18llllllll19llllllll20llllllll21llllllll22llllllll23llllllll24llllllll25llll
5. Click Actions for the new page and click Move to the Recycle Bin
6. The page will not be deleted and an error/exceptions will appear
To delete the page, a user has to delete the Wiki Node.