For a full list of features included in this script, see this document https://docs.google.com/document/d/18nLXSQQLOzl4WpUgZkM-mxhhQLY6P3FKonQGp-H0fqI/edit?usp=sharing
< Feedback on Geoguessr Unity Script
Same thing is happening to me.
It looks like this bit of the code needs to include   element.style.backgroundSize="contain";
    for (let element of document.getElementsByClassName("menu-btn"))
    {
        element.style.backgroundImage = dict[element.id][0];
        element.style.backgroundColor = dict[element.id][1];
        element.style.backgroundRepeat = "no-repeat";
        element.style.backgroundOrigin = "content-box";
        element.style.visibility = "";
    }
- in Extensions; under Tampermonkey go to dashboard; click on the edit icon for Unity Geoguessr; around line 1200 add the backgroundSize setting; then save.
    for (let element of document.getElementsByClassName("menu-btn"))
    {
        element.style.backgroundImage = dict[element.id][0];
        element.style.backgroundColor = dict[element.id][1];
        element.style.backgroundRepeat = "no-repeat";
        element.style.backgroundOrigin = "content-box";
        element.style.backgroundSize = "contain"; 
        element.style.visibility = "";
    }
No icons are showing up anymore in the dropdown meny of the script. I am using the 7.0.1 version of the unity script