WowAce

What version of Grid2  are you using (Version is displayed in General/About Tab) ?

2.9.23

What game client version, classic or retail, windows or mac and language are you using ?

TBC Anniversary

What steps will reproduce the problem?

Join a raid a group, have the raid leader mark a player as 'Tank' through the Social>Raid tab

  
Did you try having Grid2 as the only enabled addon and everything else disabled?

Yes

Was it working in a previous version? If yes, which was the last good one?

Unknown

Do you have an error log of what happened? If you don't see any errors, make sure that error reporting is enabled (`/console scriptErrors 1`) or install [BugSack](https://mods.curse.com/addons/wow/BugSack).

No errors

Please provide any additional information below.

If you go to: Grid2>General>Layouts>Special units header visibility and check the box for 'Tanks', the tank frame will not show up even when there are players marked as tanks in the Social>Raid tab.  However, if a tank uses the LFG tool to mark themselves as a tank, then they will show up in the Tank frame.  

Yes the tanks are filtered according to the role, the maintank in raid section is like a very old and deprecated option so i did not add support for this.