Here is how they are rendered in different viewers:
pdfium, pdf.js and pdfbox get the same output as Acrobat, while mupdf and Quartz get a slightly different output. Xpdf fails completely. So most likely a viewer issue, but would still be nice to investigate.
Given the following SVG:
Here is how they are rendered in different viewers:![mask_luminance-0](https://github.com/user-attachments/assets/83d2de6c-3e8f-4f78-9dfb-06cc07363552)
pdfium, pdf.js and pdfbox get the same output as Acrobat, while mupdf and Quartz get a slightly different output. Xpdf fails completely. So most likely a viewer issue, but would still be nice to investigate.