Also, normally, if there's a tie between some of PCs, it's up to the player to decide the order between them. The DM only order ties between NPC and NPC/PC.
Oh, are you thinking that in my case the two NPCs who went ahead of SH and Wyll had actually tied in initiative with them and the game had decided to put them first? That's worth thinking about if it happens again. Though if that's what's happening, I'd expect the portraits to also appear before SH and Wyll up top.
(Btw, I'm not sure what you mean about there being no bug report system in early access. It's all moot now given EA is over, but we were both able to and encouraged to report bugs and feedback via the Larian support site. It was the same link on the launcher that was called "Feedback" and now has been rebadged "Report a Bug".)