I'm not sure what it is - I don't have Winbox3 available to me right now after being sort of forced to use Winbox4.
but.. I have quite a few devices saved. Maybe ~60 - 70 routers.
On Winbox 3 I could easily see them by name/comment. but on Winbox 4 I can't!
I don't know if it was in a separate column, or just stood out more, or what, but I am finding it really hard to locate a specific router within my list.
Now that I think about it, I think it was split into sections of groups - and most of mine are in groups, but a handful not, and then it was sorted by comment within the groups.
but I can't see comment as a sortable field at all in Winbox 4.
