OXPS support is broken in 3.6.x/3.7.x. Works fine in 3.5.x

[LadyMikea]

SumatraPDF 3.6+

OXPS files are displayed as pixelated first page and a bunch of pictures. It look like:

Earlier versions (3.5.x) don't have this problem.

[kjk]

can't do anything without a test file https://www.sumatrapdfreader.org/docs/How-to-submit-bug-reports#provide-a-test-file

[LadyMikea]

Oh, no problem. Here some oxps examples.

oxps examples.zip

[GitHubRulesOK]

just a comment that MuPDF sniffer would resolve the doc format regardless of extension !

but an XPS viewer also works regardless of extension as ALL ARE ZIP (PK)

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[kjk]

mupdf bug: https://bugs.ghostscript.com/show_bug.cgi?id=709335

[GitHubRulesOK]

@kjk MuPDF resolves the XPS format as not a ORA (Open Raster Archive) which is basically what SumatraPDF is treating the file as CBZ My feeling is this is a Format sniffer problem)

[kjk]

I get the same result in mupdf-gl

[GitHubRulesOK]

@kjk unsure what your version is based on (1.27 should not differ ?) but my latest last month shows the xps/oxps as detected

[kjk]

It was fixed in mupdf after 1.27.2. When they make a new release and we upgrade, we'll pick up the fix

[GitHubRulesOK]

@kjk yes just noticed there were changes for https://bugs.ghostscript.com/show_bug.cgi?id=708971

And improve the recogniser to spot OXPS files too.

I should have checked 1.27 as it does have that problem