Problem with the colors of menu in wp 6.3

Hello in the new version of WP 6.3 I have a maybe bug . with the site editor , my theme is (Photobrust) I have a problem with the colors for the MENU in mobile device . In desktop site my menu is with main blue color in old prevision version 6.2 in mobile site i have white background with black text ,now the background is with blue color ? From version 6.3 . When try to change this color this affect the main desktop site and change color. I dont like this change . This problem is only available in the new version. I attached link with photos for example mobile menu. https://ibb.co/JnYLjtS Pls fix it tnx

The page I need help with: [log in to see the link]