This issue can be resolved by doing a language override and replacing the space before the placeholder in COM_PP_PAYMENT_VIA_BANK of the language file with the HTML reference for non-breaking space.

However, this is just one example I picked up. There may be others which have the same problem (eg paypal etc)

Hey Marc,

Not entirely sure if I understand the issue here but from what I have gathered from the language file, it already contains the space for the amount as you can see here,

[gist]
COM_PP_PAYMENT_VIA_BANK="Kindly please remit the payment of %1$s to our bank using the following bank details:"
[/gist]

Am I missing anything here?

Yes...its quite weird.
When you save the language override, the display reverts back to a space.
So it looks the same.
However, in the database its stored as &nbsp ; and then displays correctly

Hey Marc,

Hm, is this on English language or on a different language?

On the English language version.
(viewed on chrome browser)
I did a simple language override so its fixed on my side, but I thought I would add the support information in case someone else had the same issue.

Hey Marc,

It sounds good that it's fixed at your end.
This information will be helpful for others if they having same issue.

Just for your information, I have locked and marked this thread as resolved to avoid confusions in the future. Please start a new thread if you have any other issue in the future so it will be easier for us to manage your inquiries.

Thanks for understanding.