Siri Bug: Impossible to Stop Timer

Hi,

I have encountered a very frustrating bug with Siri.

Let me explain:

I can set a timer by saying:

"Siri, set a timer for 5 minutes," and the timer starts as expected.

The problem is stopping it!

It's IMPOSSIBLE to stop it with Siri...

When the timer goes off,

I say:

"Siri, stop the timer,"

And she responds:

"No timer is set,"

even though the timer is ringing and won't stop.

I've tried various voice commands like "Stop the timer,"

"End the timer,"

but she keeps insisting:

"No timer is set."

Is it possible to fix this bug?

Thanks.