Hello,
I'm quite surprised by your screenshots, one question do you have some override view and especially on your order view ?
To check this point, go to Components => HikaShop => Configuration, on Display dropdown select Views.
Then, use the three dropdown filters with : Order/Your backend template/Back end.
See, the
view number 13, called
invoice, the little
trash icon means that there some custom (or an override) on the invoice view.
If you have this,
save it on your side, and try to delete it by clicking on the trash icon.
And if, that solve your issue that means that your override is the roots issue.
Awaiting news from you.
Regards