This question was marked as a duplicate of this question. But are they duplicates?
When a future user will encounter a situation as described in my post, in which a Hebrew title doesn't show in a beamer presentation, will they consider searching for a question in which the text of an English presentation appears, but is resilient to font changes via the \setmainfont command? All the more so considering that the Hebrew presentation doesn't use the \setmainfont command explicitly.
Conversely, will a future user who will encounter a situation as described in the other post, in which changing beamer's font via \setmainfont leaves the font intact, try looking up my question about Hebrew titles not showing up in beamer+babel?
These questions are as much duplicates of each other as are two medical cases of two different patients exhibiting different symptoms when the symptoms are eventually determined to have resulted from the same underlying disease.
The following LaTeX document was saved at ~/test.tex.
\documentclass{beamer}
\usepackage[bidi=basic]{babel}
\babelprovide[main, import]{hebrew}
\babelfont{rm}{FreeSans}
\title{כותרת}
\date{2022}
\begin{document}
\frame{\titlepage}
\end{document}
The code was meant to create a simple presentation with a single slide: a title slide, containing the title כותרת in Hebrew. The code uses the babel package as the language manager.
Then the following commands were executed in the Terminal:
> cd ~
> lualatex test
The compilation completed successfully, with barely a warning (the single warning was: Package rerunfilecheck Warning: File 'test.out' has changed.), and the file ~/test.pdf was created. When opened in a PDF viewer, the file displayed as follows.
Why is the title missing? How can it be fixed?
\babelfont{sf}{FreeSans}.