Google Nest Community

Yes also was fixed for me but reappeared today as well! 

I also have turned off the device, left it for ten minutes and restarted and it seems to have solved the problem.

We have the same. 12 minute timer appears as 1-2 minute timer. 11 and 13 and all others are fine. If you ask what is 12 * 2 it works - gives 24. In UK with UK English. Have rebooted, does the same for all home members.