QBO date format keeps going back 100 years

It's a software change they've made at the server end.  I contacted them and was told they are aware of the issue and are working to fix it. How their QC let's something so basic make it into a software release is another question, of course.

Good day to you, @HullGurl  and thanks for joining this thread, @rt2.

You're correct @rt2. Currently, we recently received reports (INV-55552) that some users are also experiencing this issue, @HullGurl. Rest assured our engineering team is aware of this and are working to fix this as soon as possible. 

To be updated of the latest news about the issue, I recommend contacting our Support team. This way, they'll add you to the list of affected users and be notify via email once it's resolved.

Also, @rt2, see that you’ve posted the same issue on the Community page and already responded to it.

If you haven’t read it yet, you can check it out by going through this link: https://quickbooks.intuit.com/learn-support/en-us/other-questions/if-20-ios-typed-as-the-year-part-o...

Let me know if you have any other concerns or questions in managing your QuickBooks Online (QBO) account, feel free to tag me in your reply. I’m always around to back you up. Have a good one.

Thanks rt2! Hopefully they will fix it quickly. I had to go back and change several transactions before I realized it was entering 1921, not 2021.