The additional search options for searching inside a message are collapsed. But there is no reason to collapse them, I think. See the screenshots, if you don't understand, what I mean ;) I think the options also fit in the line... Reproducible: Always
Created attachment 96775 [details] collapsed search options would also be perfect placed in the bar
Nope :) if we add them in a simple line we can't reduce size of messageviewer. So not it's good in menu :)
Ah ok... Is there nothing like bootstraps navbar, which automatically collapses? https://getbootstrap.com/components/#navbar-default