Problems after QT5 update to version 5.15.19

Dear Maintainer,
I am writing to report a critical set of issues affecting the 
ghostwriter package, which relies heavily on wkhtmltopdf and its Qt5 
dependencies for exporting Markdown (.md) files to PDF.

1. Dependency Removal and Package Availability
Following the upgrade of the Qt5 runtime environment to version 5.15.19, 
several essential packages required by wkhtmltopdf have been removed or 
are no longer present in the Debian sid repository. This has effectively 
broken the conversion chain.

The following specific packages are currently missing:
- libqt5pdf5
- libqt5webkit5
- libqt5webview5
- qt5-image-formats-plugin-pdf
- libqt5pdfwidgets5
- libqt5webkit5-dev
- qml-module-qtquick-pdf
- wkhtmltopdf

Impact: Without these packages, the ghostwriter function to export 
Markdown to PDF via any pandoc-based converter (specifically targeting 
the ConText format) fails completely. The error observed is:

"Export failed. Error producing PDF. tex error > tex error on line 366 
in file ./input.tex:"

2. Incomplete PDF Rendering (Formulas)

Even in cases where a PDF is successfully produced using the "PDF LaTeX" 
or "PDF wkhtmltopdf" formats within ghostwriter, the content is visually 
incomplete. Specifically:

Mathematical formulas are not rendered: Equations appear only as plain 
text characters (e.g., "∑" or inline LaTeX code) rather than rendered 
mathematical notation.
Content integrity is compromised: The visual representation of the 
document does not match the source Markdown.

This suggests a deeper regression in how the renderer handles metadata 
parsing after the Qt5 migration.

Given that the original packages are no longer available in Debian sid 
and the current environment (Qt 5.15.19) is incompatible with the legacy 
wkhtmltopdf build, we need an update or a re-uploading of a patched 
version of these packages.

Is it possible to restore missing Qt5 dependencies (libqt5webkit, etc.)?

Thanks,
Antonio