Menu wide on Samsung browser

Hi, thanks for the plugin. It seems to work well on the devices I’ve checked so far, but for a Samsung Galaxy S7 running Samsung’s browser. It’s too wide, so the hamburger is off screen to the right.
Also, I get an error in debug mode:

Notice: Trying to access array offset on value of type bool in /home/mysite/public_html/develop.mysite.com.au/wp-content/plugins/mobile-menu/includes/class-wp-mobile-menu-core.php on line 297