(Kirigami) Tabs seam to have kind of a strange height of 28.

Just for info, there are some pretty old HIG drafts about lists, that contain some stuff about add & remove buttons. Most of it is probably from KDE 4 times.

If you do not want to design for the use case "2- ~5 user shared machine", then I don't think you need any kind of user avatar row. For one user it is totally pointless and for 10+ users typing the login (with autocomplete?) is better the selecting from an endless row of avatars.

Merge request for Refactored tab content and added recommendation about size .

In D17906#388294, @filipf wrote:

Updating an another computer to Frameworks 5.53 and Qt 5.12 I get the same problem.

For me this represented a massive regression, and there's bound to be more people in a similar situation. We can't have this happening.

The HIG states: "When the visual design calls for an area of exceptional focus, a larger typeface size may be used. In this case use a Light typeface weight to keep the stroke width similar to other styles throughout the interface"

Right, but why would the tabs resize when other tabs are closed? Only Kate's tab bar does this as far as I can tell and that's the nonstandard one. The closable tabs in Konsole and Dolphin for example have a fixed size determined by the title text, and do not change their size when others are closed.