Favicons + text for wide tabs, just text for narrow tabs

Solution 1:

Yes, you can enable the old horizontal tab scrolling with both favicons and titles always visible by disabling the new "Narrow Tabs" feature.

First you need to give Terminal full disk access:

Go to System Preferences > Security and Privacy > Privacy > Full Disk Access then click the + button and select Terminal.app to give it full disk access.

After giving Terminal full disk access, you can use Terminal to set user defaults in Safari allowing you to disable the new "Narrow Tabs" feature.

Method #1:

1. Close Safari
2. Run Terminal and type:

defaults write com.apple.Safari DebugDisableNarrowTabs -bool YES

3. Run Safari, it should now use the old tab behavior (horizontal tab scrolling with both favicons and titles always visible)

Method #2:

1. Close Safari
2. Run Terminal and type:

defaults write com.apple.Safari IncludeInternalDebugMenu -bool YES

3. Run Safari
4. Open the new Debug menu in Safari
5. Safari > Debug > Tab Features > Narrow Tabs (uncheck for the old behavior)