That's your browser acting up (hopefully). Chrome usually highlights automatic completion with yellow background. See https://support.google.com/chrome/answer/

That's your browser acting up (hopefully). Chrome usually highlights automatic completion with yellow background. See https://support.google.com/chrome/answer/142893?co=GENIE.Platform%3DDesktop&hl=en https://support.google.com/chrome/answer/142893?co=GENIE.Pla... , https://support.mozilla.org/en-US/kb/password-manager-remember-delete-change-and-import https://support.mozilla.org/en-US/kb/password-manager-rememb...