ES 6 bugged? What is wrong?

For some reason I have var here, really? And so are another ES 6 tasks, I delete all vars but vars are still present. I copy the answer and it is still 100% wrong. What is going on?

  **Your code so far**
let catName;
let quote;

function catTalk() {
"use strict";

catName = "Oliver";
quote = catName + " says Meow!";
}
catTalk();
  **Your browser information:**

User Agent is: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:71.0) Gecko/20100101 Firefox/71.0.

Challenge: Explore Differences Between the var and let Keywords

Link to the challenge:

The code you have shared works on my end. Please ensure that you have disabled any extensions that interface with the freeCodeCamp website (such as Dark Mode and Ad Blocker), and set your browser zoom level to 100%. Both of these factors can cause tests to fail erroneously.

Your code is correct @sietrin24 I tested it.

The fact is I am doing this task on a laptop with raw Firefox. I was doing tasks yesterday on my PC with adblocks and everything worked fine

Is your firefox up to date? Because users have had issues with an out-of-date browser.

Or can you use a different browser?

Because @nikhilreddy.manda and I tested it on our ends and the test is passing.

Yeah, I updated browser and it works now

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To avoid Issues in future enable auto update in your browser🔁