Older double sided cards are missing the title of the back

So I do not know if this was different any time earlier, but the newer double sided cards are in my opinion right, for example:

Needleverge Pathway // Pillarverge Pathway

Thing is, when I export my collection, some cards are missing the card back in the title separated with two slashes. Would like to know, if this is a bug or intended.

Example how I would expect it:
Search for Azcanta // Azcanta, the Sunken Ruin

How it actually looks like:
Search for Azcanta

Is this something that can be fixed?