I think that's intended and based on the design of T284243

That task was about lower resolutions, and here I've shared shots of my 2560px-wide screen. So I presume it's not intended.

I believe this was an intentional side effect of T301583 (possibly related to a lack of consideration for the watchlist icon in T289619). If there are more than 3 buttons in the toolbar (excluding user menu) it drops to a new line. In this case we have username, echo x 2 and watchlist icon. We could change the threshold for when the collapsing kicks in to 4 and/or disable the new line behaviour on "wide desktop" screens.

The possible trade off with changing the collapsing threshold is with long usernames, this will reduce the size of search

We also need to be aware that on some wikis the language button is also present.

... and sometimes the clock gadget.

Here be dragons

@alexhollender_WMF says this isn't a priority right now, so dropping back to backlog for now.

@Jdlrobson what's the easiest way to handle this from an engineering perspective? I don't feel super strongly about the positioning, so if it adds a lot of complexity we can leave it below the user links.

I'm also wondering if it's worth making it a floating element, as we had once discussed, to avoid the need for the position complexity:

wide	narrow

The status quo is probably the easiest to maintain from an engineering perspective. We don't have a component for fly out's yet, so the proposed design is probably a little tricky (see T311160 which has the same problem)