Repro (on latest Chrome, latest Windows):

• go to https://www.cogentcore.org/
• select Settings
• click + button next to Screens

First, it's completely mysterious what it does.

Second: it adds Zoom field with value 10 (10% ?). This makes display almost un-readable.

Changing the Zoom value doesn't work. There's no way to remove it.

I had to delete website data in Chrome to get back to normal state.