Hi,

Please provide link to the page with the issue

Or try to add this code:

document.addEventListener("DOMContentLoaded", function() {
    const images = document.querySelectorAll("img");
    images.forEach(image => {
        image.addEventListener("mouseover", () => {
            image.dataset.originalTitle = image.title;
            image.removeAttribute("title");
        });
        image.addEventListener("mouseout", () => {
            image.title = image.dataset.originalTitle;
            delete image.dataset.originalTitle;
        });
    });
});

to the custom JS field in the theme options