If the Quantity column is not showing when previewing an estimate transaction using the link from the share quote link function, I've found out that there's an ongoing investigation that users have also experienced the same issue. Please know that our team is aware of this matter, and it's being prioritized to work on a fix.
As of now, I recommend contacting our Customer Support Team so you'll be added to the list of affected users and be notified when there's already a resolution. Here's how:
Go to Help (?), then click Contact Us.
Please enter your question and select Let's talk.
Review and Select from the following: Have us call you or Chat with us.
Ensure that you reach out to them during their available hours so they can address your queries promptly.
Otherwise, this might be a browser-related issue. Thus, there are times when too much historical data from the browser causes discrepancies that affect the view and performance of your QuickBooks. Feel free to use either of these keyboard shortcuts to open an incognito window, depending on your browser: