The letters S and C on the Safari Google Search Bar

simeon2215 wrote:

Thanks for the reply. Turns out is is not an issue with Chrome (no surprise there) - but still an issue nonetheless.

To trouble shoot further your Safari:

—Try a SafeBoot https://support.apple.com/en-us/HT201262

Takes noticeable longer to get to the login screen, does a 5 minute disk repair before it fully boots up, and certain system caches get cleared and rebuilt, including dynamic loader cache, etc.

Login and test. Reboot as normal and test. Caches get rebuilt automatically.

In Safe mode third party system modifications and system accelerations are disabled, it removes malware, etc hampering smooth operation, however a reboot will put it back to normal mode.

This test will tell you if third party interference; extensions etc are not loaded in safe boot mode.

—Test issue in another user (or guest user) account https://support.apple.com/guide/mac-help/set-up-other-users-on-your-mac-mtusr001/mac

This will tell you if it a universal issue or isolated to your user/admin account. 

Uninstall all third party apps that are Cleaners/Optimizers/VPN/Anti-Virus

all known to cause issues on the macOS

simeon2215 wrote:

Same problem as earlier poster. Whenever I type the letters sc on the Safari Google Search Bar, these letters disappear. So I can't write words like "science," "school," or "Scott." Does anyone have any idea why this is happening?

Try a different browser and compare your results...