I’ve been reporting the same bugs in Finder since Mavericks, don’t get your hopes up that they will be fixed.
Finder is the bug, unfortunately.
You’d think Apple would at least want to take care of any visual inconsistencies, specially in one of the major features which are touted as the big incentives for upgrading. There are still some UI elements here and there which are out of place in Dark Mode at best, or almost illegible at worst.
Such lax approach to UX polish has traditionally been associated with Microsoft, not Apple.
I reported (and had Apple engineers come to meet us) a severe bug (found and showed the engineers the single line of code in the public source code) in OSX 10.4’s wifi stack, wasn’t fixed until 10.8. Literally a single line of code.