Congratulations, please help to solve the glitch:
* When you open categories in the side menu on a mobile phone and scroll down the list of categories, half of the category icons are not displayed. Please tell me what this could be connected with?
Please deactivate all the 3rd party plugins and activate only theme-required plugins on the site and then check the issue. I am sure your issue will be solved. Then Activate the 3rd party plugins one by one and check which plugin is creating the issue for you.
Otherwise, if the issue still exists then keep the 3rd party plugins deactivated and let me know so I will check and give you a possible solution.