Parsing issue giving wrong output on codesandbox console

🐛 bug report

let array = [1, 5, 3, 5, 6, 8];
const checkFun = (num1, num2) => {
for (let i = 0; i < array.length; i++) {
if (array[i] === num1) array[i] = num2;
}
};
console.log("before", array);
//Expected - [1, 5, 3, 5, 6, 8]
//Output - [1, 10, 3, 10, 6, 8]
checkFun(5, 10);
console.log("after", array);

If I run the same code on the console of any browser , its giving me the correct output . The console of codesandbox is giving a different and not-expected output.

Start by reproducing the provided JavaScript snippet in the CodeSandbox console and compare its output with a browser console. Trace the console's parsing or execution entry point to determine where the observed output diverges; done means the same snippet produces the expected array without regressing related console behavior.