Should it take 1.5 hours for a newly created tax rate to become available for selection in the sales column dropdown in an invoice or estimate?

Being new to this i thought i was doing something wrong... so for almost 2 hours i clicked around, quadrupled checked every possibility, searched the internet for answers.... then i tried a different browser (chrome) and my custom tax rate showed up.    In shock that it could be related to the browser, i opened up the first browser again and there was my custom tax rate ready for selecting in the first browser too (firefox).   So now i don't know what to think.  I was under the impression the tax would have been automatically applied based on the customers address which is in a different province from mine.   When that didn't happen i created the new custom tax rate with their provincial  HST rate.  Then for more than 90 minutes i wondered if i was doing something wrong.  It was super frustrating.  Now it appear quickbooks itself was taking a nap.  The next time something doesn't work right I don't know if i'll have the patience to spend over an hour and half checking things when it could be entirely possible quickbooks is not functioning correctly.