Finder toolbar gets bigger

[muuvmuuv]

When I drag-and-drop the app into the toolbar the toolbar gets bigger.. this is really not nice and when I say Icons and Symbols the text is "Open in Code.app".

Here is a Video I made: https://we.tl/t-nu2Z9oZ9sj

[ahmetb]

Also doesn't play along well with Dark mode of Mojave:

[Wcdaren]