In the page settings dialog change some option and then cancel without submitting. When you reopen page settings this setting is incorrectly marked as changed.
Fixed with https://github.com/phpmyadmin/phpmyadmin/commit/1121d5d2f6cfb3f5f3a135c2a3919d16f22d88ec
Fixed with https://github.com/phpmyadmin/phpmyadmin/commit/1121d5d2f6cfb3f5f3a135c2a3919d16f22d88ec
Fixed with https://github.com/phpmyadmin/phpmyadmin/commit/1121d5d2f6cfb3f5f3a135c2a3919d16f22d88ec