Does anyone know why when I am in my enter vender bill format my tab select does not work

It's been an issue for a lot of us for a few weeks, now.  QB doesn't seem to think, nor believe that it's broken.  There has even been QB customers posting videos and screenshots of the issue, and still being told it's fine, or to contact "Support".  

In fact, someone from QB should be along shortly to suggest clearing your cache or using incognito. When those don't work, they'll just tell you to reach out to support, that will tell you it's fine. 

Good luck, though.  Just know that you're not alone. 

Thanks for reaching out to us, @bonita-gloriosos.

We have received reports from other users having the same issue as what Just_me is experiencing. And at this time, our product engineers are investigating the root cause and implementing a fix. While they do, I suggest contacting our Support Team to include you in the list of affected users. Once you're added, expect an email from our engineers for updates. 

To reach them, click the ? Help button at the top-right corner and select Contact Us to talk with a live agent. Ensure to review their support hours to know when agents are available.

In case you need some related articles in managing your account, you'll want to consider visiting our Community Help Articles hub. 

Don't hesitate to let me know if there's anything else I can do to help. I want to make sure you're taken care of.