In the Settings - Appearance the option “Show tab search button” is not keep when restart the browser.
In my tests: (MacBook Pro - Chip Apple M1 Pro - macOs Monterey)
- I set the switch button to false and restart the browser;
after the relaunch, the option is yet false but the search button is showing; - I set the switch button to true and false again to hide the search button on tab bar.