As you can see in the screenshots, titlebar has inconsistent height in Gnome Tweaks. The problem is Extensions page which has a toggle next to minimize button. Also, Gnome Settings suffer from this issue when default view has a toggle next to minimize button. When default view is a page without toggle next to minimize button, titlebar height is normal until wi-fi or bluetooth page is opened.
Gnome 3.32.2 on Arch
As you can see in the screenshots, titlebar has inconsistent height in Gnome Tweaks. The problem is Extensions page which has a toggle next to minimize button. Also, Gnome Settings suffer from this issue when default view has a toggle next to minimize button. When default view is a page without toggle next to minimize button, titlebar height is normal until wi-fi or bluetooth page is opened. Gnome 3.32.2 on Arch