Official KDE bug tracker the bug #393421 closed as “intentional” back in 2018. The line is still there, fresh complaints pop-up from time to time on Reddit and StackExchange.
What would be the most productive way to engage with the relevant team and discuss this in a civil manner?
P.S. Apologies for not providing the links, new account.
@carl Given that, according to the link, Fedora KDE patched in your proposal already, is there any way to get this for others, e.g. Arch? Short of compiling+patching Kmail myselve?