Thank you for your answer. Actually, I'm not a fan of Times New Roman
for rendering the Arabic script, but sometimes the default font is Times
New Roman on certain web pages. I'll test supplanting the current font
with a fresh one from Windows / MacOS and get back to you.
Either way, why isn't
This package pulls a long-obsolete version of the font. If you
absolutely must use it, please manually copy a more recent version from
a Windows install into your Linux system. It might fix your bug.
** Changed in: msttcorefonts (Ubuntu)
Importance: Undecided => Wishlist
** Changed in: