Failing search for words with ligatures after update [closed]

After updating my MikTeX distribution couple of days ago I discovered that search for words with ligatures (such as "fi" in prefix), which has worked before, fails.

Here the MWE illustrating the problem (compilation with xelatex):

\documentclass{book}
\usepackage{fontspec}
\setmainfont[Path=Fonts/,
Extension=.ttf,
BoldFont=FrutigerLTCom-Bold,
ItalicFont=FrutigerLTCom-Italic,
BoldItalicFont=FrutigerLTCom-BoldItalic]%
{FrutigerLTCom-Light}
\begin{document}
Prefix.
\end{document}


As discussed here, the line \usepackage{fontspec} enables the correct behaviour.

Adding the font settings \setmainfont[...]{FutigerLTCom-Light} leads to the incorrect behaviour. Is there a bug that possibly has been introduced to the fontspec package or somewhere else in one of the latest MikTeX updates?

• I can confirm that there is problem, not only in miktex but also in texlive 2018. It looks like a xdvipdfmx problem and I did sent a message to the texlive list. May 4 '18 at 16:08
• The problem has been hopefully fixed in the sources. I can't say when it will picked up by miktex. May 6 '18 at 12:30
• I updated my MikTeX distribution, but unfortunately I see no changes. BTW, if I use \setmainfont{Times New Roman}, everything works as expected...
– Mik
May 10 '18 at 16:55
• I have miktex next here on the PC, perhaps the newest xdvipdfmx isn't yet in the standard miktex. May 10 '18 at 17:00
• I'm voting to close this question as off-topic because it was solved after updating as mentioned in comments. Nov 20 '18 at 22:08