When clicking into the bingo subforum, it shows that there are 10 topics, however, if you check, there are many more than 10. Many were moved in after the subforum's creation, so not sure if they were categorized correctly.
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Your browser/os information:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.110 Safari/537.36 (this will help us make sense of your bug report)