pester mode not working for showToastEvent in LWC

Question

I have a Lightning web component (LWC) using showToastEvent. The pester mode is not working right -- I do not see a close icon and it closes automatically in 3 seconds.

This answer says to clear the cache, but I've tried it on separate browsers and machines and it still doesn't work properly.

The close icon is displayed for dismissable but I want to use pester.

Has anyone else seen this issue? I'm using the LWC in a quick action so I've had to wrap it an aura component. Could this be the reason?

const evt = new ShowToastEvent({
    "title": "Warning",
    "message": "You must enter at least a zip code, an email or a mobile number",
    "mode": "pester",
    "variant": "warning"
});
this.dispatchEvent(evt);

Answer 1

Okay looks like documentation is a bit messed. This is what I found by trying all

1. pester - Stays for 3 seconds, No close symbol
2. sticky - Stays infinitely or Until you press the close button
3. dismissable - Stays for 3 seconds, you can close it by pressing close button.