When entering a forward slash into your bio (/) it is replaced with a fraction slash (⁄ U+2044). This is fine, however due to filtering of status and bios preventing the entry of unicode characters, the fraction slash is then filtered out the next time the user edits their bio with the new fraction slash in it.
It would be preferable that the fraction slash not be filtered out when saving your status, since it was but there by the API in the first place.
This may be a separate issue, but a user’s status does not sub the forward slash for the fraction slash while the bio does, so nothing resembling a forward slash can be entered into a user’s status.
The pictures bellow are of the status with a regular slash, followed by the fraction slash appearing after saving, then saving again without making any edits.