This works with the current PDF rendering system - https://en.wikipedia.org/w/index.php?title=Special:DownloadAsPdf&page=EBay&action=show-download-screen produces a PDF labeled "eBay" with a lowercase E.

The current PDF renderer provides two types of output it can render a regular PDF and a Mobile Version of PDF which is much easier to read on mobile devices.

Update: support for SVG output using LilyPond 2.24 has been added to the master and REL1_39 branches of the Score extension (T49578).

Adding Proton per last comments.
@Shizhao, @Taiwania_Justo: Could someone please provide clear, complete steps to reproduce, as a list, including URLs, step by step? Thanks a lot!

If I understand correctly, then this is fixed on Wikimedia servers nowadays:
We nowadays link to WS Export in the sidebar for PDF files (which includes the image and all the subpages). When using "Versione stampabile" the image is also included. I'm not sure how <pages index="Odissea (Pindemonte).djvu" from=8 to=8 /> would be rendered correctly though. :-/

Declining this task as "The Wikimedia Foundation's book rendering service has been withdrawn", plus OCG has been dead for years and superseded by Proton and Electron-PDFs on Wikimedia servers. If there is still an issue with currently available PDF export on Wikimedia servers, then please file a new ticket with updated information and steps to reproduce. Thanks!

This is fixed on Wikimedia servers nowadays:
Going to https://en.wikipedia.org/wiki/Overline#Word_processors and selecting "Download as PDF", and scrolling to that section, the xyz has an overline. This is related to removing OCG-PDFRenderer/OfflineContentGenerator and replacing it with Proton and Electron-PDFs as the new PDF rendering stack on Wikimedia servers.

...or well, in terms of Wikimedia (as this was on several wishlists) it probably makes more sense if I add the Proton tag and close it as resolved instead, I guess. :)

This is fixed on Wikimedia servers nowadays:
General table support for MediaWiki pages exported as PDF was implemented a while ago by removing OCG-PDFRenderer/OfflineContentGenerator and replacing it with Proton and Electron-PDFs as the new PDF rendering stack on Wikimedia servers.

This is fixed on Wikimedia servers nowadays:
Going to https://de.wikipedia.org/wiki/Bologna , selecting "Download as PDF"/"Als PDF herunterladen", and scrolling to the "Klimatabelle" it is rendered correctly nowadays. This is related to removing OCG-PDFRenderer/OfflineContentGenerator and replacing it with Proton and Electron-PDFs as the new PDF rendering stack on Wikimedia servers.

Cannot reproduce a problem anymore with current Proton and Electron-PDFs: On current https://en.wikipedia.org/wiki/C_(programming_language) , using "Download as PDF", code snippet areas are rendered as expected. Not a problem anymore.

Declining this task as OCG has been dead for years and superseded by #Proton and #Electron-PDFs on Wikimedia servers.

Declining this task as "The Wikimedia Foundation's book rendering service has been withdrawn", plus OCG has been dead for years and superseded by Proton and Electron-PDFs on Wikimedia servers. If there is still an issue with currently available PDF export on Wikimedia servers, then please file a new ticket with updated information and steps to reproduce. Thanks!

Declining this task as the test case is gone, as "The Wikimedia Foundation's book rendering service has been withdrawn", plus OCG has been dead for years and superseded by Proton and Electron-PDFs on Wikimedia servers. If there is still an issue with currently available PDF export on Wikimedia servers, then please file a new ticket with updated information and steps to reproduce. Thanks!

Declining this task as "The Wikimedia Foundation's book rendering service has been withdrawn", plus OCG has been dead for years and superseded by Proton and Electron-PDFs on Wikimedia servers. If there is still an issue with currently available PDF export on Wikimedia servers, then please file a new ticket with updated information and steps to reproduce. Thanks!

@cscott: No reply. Closing.

Going to https://fa.wikipedia.org/wiki/کاربر:Ebrahim/pdf and selecting Download as PDF in the sidebar, this seems to be still valid. Adding Proton as the underlying codebase nowadays.

Declining this task as "The Wikimedia Foundation's book rendering service has been withdrawn", plus OCG has been dead for years and superseded by Proton and Electron-PDFs on Wikimedia servers. If there is still an issue with currently available PDF export on Wikimedia servers, then please file a new ticket with updated information and steps to reproduce. Thanks!

Declining this task as "The Wikimedia Foundation's book rendering service has been withdrawn", plus OCG has been dead for years and superseded by Proton and Electron-PDFs on Wikimedia servers. If there is still an issue with currently available PDF export on Wikimedia servers, then please file a new ticket with updated information and steps to reproduce. Thanks!

Declining this task as "The Wikimedia Foundation's book rendering service has been withdrawn", plus OCG has been dead for years and superseded by Proton and Electron-PDFs on Wikimedia servers. If there is still an issue with currently available PDF export on Wikimedia servers, then please file a new ticket with updated information and steps to reproduce. Thanks!

Cannot reproduce a problem anymore with current Proton and Electron-PDFs:
On current https://de.wikipedia.org/wiki/Dād , using "Download as PDF", the Arabic text is rendered in the correct order. Not a problem anymore.

Declining this task as "The Wikimedia Foundation's book rendering service has been withdrawn", plus OCG has been dead for years and superseded by Proton and Electron-PDFs on Wikimedia servers. If there is still an issue with currently available PDF export on Wikimedia servers, then please file a new ticket with updated information and steps to reproduce. Thanks!

For the records, https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Collection/+/163139/ has been abandoned. Adding Collection as that is the codebase that the patch is about. (In the meantime, OCG has been superseded by Proton and Electron-PDFs on Wikimedia servers.)

This problem does not happen anymore now that we use Proton and Electron-PDFs on Wikimedia servers: Trying on https://www.mediawiki.org/wiki/User:AKlapper_(WMF)/Sandbox#T74382 and selecting "Download as PDF", the unlabelled external link is rendered as [1] https://address.

Going to https://it.wikipedia.org/w/index.php?title=Antigua_Guatemala#Galleria_d'immagini nowadays and using "Download as PDF", this problem does not happen anymore now that we use Proton and Electron-PDFs on Wikimedia servers. Gallery images and captions are included:

Declining this task as "The Wikimedia Foundation's book rendering service has been withdrawn", plus OCG has been dead for years and superseded by Proton and Electron-PDFs on Wikimedia servers. If there is still an issue with currently available PDF export on Wikimedia servers, then please file a new ticket with updated information and steps to reproduce. Thanks!

Tstcase at https://gu.wikisource.org/wiki/સભ્ય:Sushant_savla/પુસ્તકો/બુદ્ધ_અને_મહાવીર is gone. :( Given that even T73798 renders characters correctly nowadays that we use Proton and Electron-PDFs on Wikimedia servers, instead of OCG which was used at the time that this ticket was created, I am quite confident that this fixed nowadays by using Proton and Electron-PDFs. I am declining this task as it is about OCG, and OCG has been dead for years and superseded by Proton and Electron-PDFs on Wikimedia servers.

Cannot reproduce this problem anymore nowadays: Trying on https://en.wikipedia.org/wiki/Fork_(chess) which still uses {{Chess diagram}} this is nowadays supported by Proton and Electron-PDFs on Wikimedia servers. Declining this task as "The Wikimedia Foundation's book rendering service has been withdrawn", plus OCG has been dead for years and superseded by Proton and Electron-PDFs on Wikimedia servers.

Declining this task as OCG has been dead for years and superseded by Proton and Electron-PDFs on Wikimedia servers. Cannot reproduce this problem anymore nowadays. If there is still an issue with currently available PDF export on Wikimedia servers, then please file a new ticket with updated information and steps to reproduce. Thanks!

Renders as expected in the PDF when trying on https://www.mediawiki.org/wiki/User:AKlapper_(WMF)/Sandbox with "Download as PDF", nowadays that we use Proton and Electron-PDFs on Wikimedia servers.

Closing as this lacks a testcase URL (cannot retest), and as OCG has been dead for years and superseded by Proton and Electron-PDFs on Wikimedia servers.

Going to https://de.wikisource.org/wiki/Faust_-_Der_Trag%C3%B6die_erster_Teil and clicking "Download as PDF", it successfully creates a PDF file with 235 pages nowadays that we use Proton and Electron-PDFs on Wikimedia servers, instead of OCG.
Not sure how to test http://de.wikisource.org/wiki/G%C3%B6ttliche_Kom%C3%B6die_%28Streckfu%C3%9F_1876%29 as that only has five pages.

Declining this task as "The Wikimedia Foundation's book rendering service has been withdrawn", plus OCG has been dead for years and superseded by Proton and Electron-PDFs on Wikimedia servers. If there is still an issue with currently available PDF export on Wikimedia servers, then please file a new ticket with updated information and steps to reproduce. Thanks!

Cannot reproduce a problem anymore with current Proton and Electron-PDFs:
On current https://en.wikipedia.org/w/index.php?title=Cuneiform&oldid=1009107568 , using "Download as PDF", the characters in the section "Sumero-Akkadian cuneiform" are now correctly rendered, and the table under "Syllabary" is now included, and it also renders the characters correctly.
No problems anymore.

Declining this task as OCG has been dead for years and superseded by Proton and Electron-PDFs on Wikimedia servers.