Allow me to help provide some additional update about the preview and print button issue in QuickBooks Online (QBO).
We have ongoing issue where some users preview and print button unresponsive when printing checks from check queue, and our engineers are already investigating the root cause of this unexpected hitch and are working to implement a solution.
While we're continuing to work on resolving this issue, I encourage you to contact our QuickBooks Online Support Team so they can add you to our notification list of affected users to receive live email updates about this issue.
Here's how you can contact our customer support:
For additional reference, you can check this article: Print Checks.
I appreciate your patience as we work through this. Don't hesitate to leave a comment below if you have any other questions. I'm always here to help.