Dear Hilmar,
Thank you for a quick answer. Note that the version of the package NewTX (most
likely, 1.726 (cf. https://ctan.org/pkg/newtx), since all the mentioned bugs
are repaired, whereas it was not the case for a few immediately preceeding
versions) deviates from the version of the file newtx.sty (namely, still
1.724). My question concerns the version of the whole NewTX package and not the
versions of the constituent files. (Since you wrote that the present bug report
1051497 is repaired, I highly believe you that you put 1.726 into
texlive-fonts-extra, and what I'd like to know is how to check this in the
future.)
Cheers,
AlMa.
