Translation in customized print format not working

Hey there!

Since previous update I have an issue with translation of customized print formats.

The standard format works as usual, everything is translated normally, but as soon as I create a customized one (even when I change nothing) it’s not translated anymore:

Standard:

Custom format:

Has anyone an idea what’s going wrong here?

Thanks a lot for any helpful answer!

[EDIT:]
The item table is translated correctly, btw.

Choose language (eg. English).