The idea behind custom view templates is that users should make their own. There is some “default” one Manager has just to demonstrate how it works.
The previous default template was comprehensive but extremely difficult to understand (even for me) so new default template was greatly simplified and a lot of non-essential features removed.
I understand that sometime you don’t want to write new HTML template from scratch and just want to make minor modifications to the default look of your invoices. I get it.
Perhaps I will need to get rid of the default template altogether and just write some tutorial to explain how to create one from scratch. The you can cherry-pick from tutorial what you want on your invoice and what you don’t want. End result would be that your template does everything you want but it’s simple to understand, modify and extend.
By the way, if the invoice shows ##### as their template. It means the template has been deleted and thus default one will be used.