Open Issue with group messaging

I am trying out the group messaging on a Pixel w/ the Windows 10 app on desktop.
I have a group messaging thread with person A + B + C + me. On the Windows 10 app, it doesn't show the name of person C, just the first 2. I see messages in the thread from person C and others, no names in the thread at all so it's hard to tell who's who from the Windows 10 app. Then when I try to send a message, on my phone it sends to a thread with just person A + B in it. I don't remember if I created that thread as I did have one a while back with just them 2 in it, but there are no messages in this particular one, so it seems like it might've created it.
Still waiting to hear back if anyone has received my message, regular SMS works fine for me though at least.

 

I have a very similar problem (see my thread). I am using a Galaxy S7 with the Chrome app.