Currency symbol on sales invoice

[Hans]

Have a look at @Tut answer here:

Currency symbol location

It seems as though Currency Prefix/Suffix is now disabled (v.12.66). I noticed invoices are printing with no symbol, despite my having indicated usage of $. If I enable Base Currency and select US$, that will print. But when I disable Base Currency, even if I delete the US$ selection first and leave no selection, the US$ prefix remains. No matter what I enter in the Currency Prefix/Suffix box, it has no effect. Are we now required to use Base Currency? Is this related to introduction of Multi-C…