Description
Clicking in the URL to make it active, shifts up texts a few pixels. This both looks odd, and causes the text to align badly. And when there is existing URL into the URLbar, the left part of the colored underline becomes thinner. The underline can look slightly different each time you click in the URL bar. That seems to depend on how short you hold the mouse button. Doing a very short click always ends up with the thin line like in the screenshot. Holding the mouse button slightly longer can end up with a smaller thin part, or even look completely fine.
Screenshots

Tweaks in use
All default on a new profile.
Additional context
Description
Clicking in the URL to make it active, shifts up texts a few pixels. This both looks odd, and causes the text to align badly. And when there is existing URL into the URLbar, the left part of the colored underline becomes thinner. The underline can look slightly different each time you click in the URL bar. That seems to depend on how short you hold the mouse button. Doing a very short click always ends up with the thin line like in the screenshot. Holding the mouse button slightly longer can end up with a smaller thin part, or even look completely fine.
Screenshots

Tweaks in use
All default on a new profile.
Additional context