Very disappointing indeed. All of the (repeated) canned answers are nonsense. I wish this would escalate to higher level engineers for a real solution, but here we are TWO MONTHS later without a fix!! This is definitely a QBO issue, not a browser issue. My only client affected by this issue is on the Singapore version of QBO. All of my US clients are unaffected.
One partial work around is accessing the email templates in company settings.
Gear icon > Your Company > Account and Settings > Sales
You probably still won't be able to access the full customization options (at the top), but scroll down to Messages, and you can edit the default email sent with invoices.
Below that in the Reminders section you can edit the email sent with the invoice reminders.
Hope this ACTUALLY helps a little!
