When a forum censors (parts of) words (with 3 or 4 characters for example) sometimes the bbcode_uid contains the same characters as the one that are censored. The forum first censors the post and then tries to render the BBCodes. Then you get problems like this:

[b:2noobfm4]Test[/b:2noobfm4]
becomes
[b:***]Test[/b:***]
instead of
Test

This bug still occurs.