WowAce

What version of Grid2 and game type (classic or retail) are you using ?

 Grid2: 1.1.2.0
Wow retail: 9.0.2.37474

What game client version (windows or mac) and language are you using ?

Wow retail: 9.0.2.37474 ,English 

What steps will reproduce the problem?

Not entirely sure as I don't know exactly what is causing it to happen - in my case it's "be in a raid (heroic specifically, not sure if it's happening elseware) in Nathria". Raid size when this was occurring was 12-15 people

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

I did not  

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

Not sure - it's possible people have been missing for a while and I only just noticed recently.  

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 visible errors - I'll install bugsack if necessary but I wanted to create something before I forgot for another week.

Please provide any additional information below.

 What seems to be happening:

- in a raid of 12-15 people, we had 3 groups:
-- tanks
-- dps and healers
-- group 3 - a handful of other DPS

From what I noticed, the people in group 3 would not show up when I had the Layout configured "By Role". If I switch to "Group and Role" they show up. If I click through other layout options, the missing folks would show in some of them, but not others - by role with pet, they would not show. By group, they would show.

I confirmed show all groups was on. I also tried creating a custom layout, that was able to span more players per column, and while that changed the layout and size of the frame, the missing folks did not appear.

Install 2.0.0-alpha version.

1. Goto General/About tab and enable  "Grid2" toggle (in Debugging section).

2. Goto Layouts/General tab and uncheck the "Use Blizzard Unit Frames" option.

Report back if this fix (or not) the issue.

Warning: Disabling the "Use blizzard unit frames" option, units cannot join or leave the raid while in combat, so a new player joining the raid will no be visible until combat ends.

Great thank you Michael, I will give these steps a shot.

My guild raids Tuesdays and Wednesdays so I won't get a chance to try and reproduce until Tuesday. I've gone ahead and switched to the 2.0.0 alpha, and made those config changes so things will be ready.

Hey Michael - raiding right now with 22 folks, all of them showing in the frame, and with my preferred Layout of "By Role" configured :)

Currently on 2.0.1 alpha