Some sites disable copy/paste, especially annoying when you just want to grab a snippet of text.
The fix: intercept the event before their handler runs, using stopImmediatePropagation().
(() => {
const allowCopyAndPaste = (e) => {
e.stopImmediatePropagation();
};
["copy", "paste"].forEach(event =>
document.addEventListener(event, allowCopyAndPaste, true)
);
})();
Run the snippet once in the browser dev console. Refreshing the page will undo it.