I have a 52-page document authored in Pages that contains many equations, most of them pertaining to matrix algebra with many subscripts. Using Pages v13.2 on macOS 14.0 Sonoma (23A344), the exported PDF version of the document does not render the equations correctly. In particular, equations containing a vertical bar "|" are rendered without the vertical bar in the PDF document. For example, an equation for a probability expression of "P(x|y)" gets exported to PDF as "P(x y)".
In particular, the Pages "blahtex" form for a discrete-time system equation is
\mathbf{x}_{k+1} = \mathbf{\Phi}_{k+1|k} \mathbf{x}_k + \mathbf{u}_k + \mathbf{\Gamma}_{k+1|k} \mathbf{w}_k
In Pages, this gets correctly rendered as
whereas, in the exported PDF document, it gets incorrectly rendered as
Also, using \vert or \mid to generate the "|" in the equation does not help; the PDF export is still missing the "|" symbol.
If I save the document in Microsoft Word format and then export to PDF, the equations are rendered correctly.
Reverting to Pages v13.1 from Time Machine does not fix the issue; the exported PDF is still wrong. It should be noted that when I used Pages v13.1 in Ventura, exported PDF equations rendered correctly.
There may be other formulations that are broken that I have not yet encountered. In addition, my equations in Keynote suffer from the same problem when I export them to PDF. I know that macOS Sonoma removed EPS support, but it looks like other things got broken with this change.
I don't want to convert all of my Pages documents to Microsoft Word, but unless this gets fixed, Pages has become useless to me for technical documentation. I'm an engineer with a lot of documents, so this has pretty much brought my workflow to a halt.
I've submitted a bug report to Apple (FB13208972), but I am interested if anyone else is experiencing this problem.