Black rectangles on figures

[sergeM1313]

SumatraPDF version

• Version [e.g. 3.7, pre-release]

Describe the bug
page 4 of the attached file the graph legenda are hidden by black rectangles. This does not occur with adobe, and neither on other files.

To Reproduce
Steps to reproduce the behavior:

1. download the file
2. open it
3. go to page 4
4. See error

Expected behavior
No black rectangles

File that reproduces the problem

ref_test_bug_sumatra.pdf

If this is related to a specific PDF etc. file, please attach the file.

Screenshots

If applicable, add screenshots to help explain your problem.

Additional context

[GitHubRulesOK]

that is a very ODD way to build an image areas as different tiles but agreed it is a MuPDF issue that the mixed types should not be a problem but is down to MuPDF handling

[sergeM1313]

Ok, thanks for looking at the problem (which does not show off so often by the way). Do you mean you will not be able to address it? Best Serge +33 (0) 4 42 25 20 36 (attendre plusieurs sonneries pour le transfert d'appel en cas de télétravail) De : GitHubRulesOK ***@***.***> Envoyé : vendredi 27 mars 2026 14:59 À : sumatrapdfreader/sumatrapdf ***@***.***> Cc : MAILLARD Serge ***@***.***>; Author ***@***.***> Objet : Re: [sumatrapdfreader/sumatrapdf] Black rectangles on figures (Issue #5428) [Image supprimée par l'expéditeur.]GitHubRulesOK left a comment (sumatrapdfreader/sumatrapdf#5428)<#5428 (comment)> that is a very ODD way to build an image areas as different tiles but agreed it is a MuPDF issue that the mixed types should not be a problem but is down to MuPDF handling image.png (view on web)<https://github.com/user-attachments/assets/e687d0e2-094a-4643-9eb8-be2359aee819> — Reply to this email directly, view it on GitHub<#5428?email_source=notifications&email_token=BHHMUCNLV5TYNVWV2TVJ33T4S2CKJA5CNFSNUABFM5UWIORPF5TWS5BNNB2WEL2JONZXKZKDN5WW2ZLOOQXTIMJUGI4DCNBQGQ32M4TFMFZW63VGMF2XI2DPOKSWK5TFNZ2KYZTPN52GK4S7MNWGSY3L#issuecomment-4142814047>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/BHHMUCMDLENNNGDJD4C74JL4S2CKJAVCNFSM6AAAAACXB5ODFSVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHM2DCNBSHAYTIMBUG4>. You are receiving this because you authored the thread.Message ID: ***@***.***>

[GitHubRulesOK]

@sergeM1313 I am not the developer and the problem is upstream MuPDF
so @kjk would need to decide if it is something fixable in SumatraPDF
or if it has been or needs be resolved by Artifex

[sergeM1313]

OK, thank you for informing Serge +33 (0) 4 42 25 20 36 (attendre plusieurs sonneries pour le transfert d'appel en cas de télétravail) De : GitHubRulesOK ***@***.***> Envoyé : vendredi 27 mars 2026 18:07 À : sumatrapdfreader/sumatrapdf ***@***.***> Cc : MAILLARD Serge ***@***.***>; Mention ***@***.***> Objet : Re: [sumatrapdfreader/sumatrapdf] Black rectangles on figures (Issue #5428) [Image supprimée par l'expéditeur.]GitHubRulesOK left a comment (sumatrapdfreader/sumatrapdf#5428)<#5428 (comment)> @sergeM1313<https://github.com/sergeM1313> I am not the developer and the problem is upstream MuPDF so @kjk<https://github.com/kjk> would need to decide if it is something fixable in SumatraPDF or if it has been or needs be resolved by Artifex — Reply to this email directly, view it on GitHub<#5428?email_source=notifications&email_token=BHHMUCI4N7SPOMHAE54IP5T4S2YLLA5CNFSNUABFM5UWIORPF5TWS5BNNB2WEL2JONZXKZKDN5WW2ZLOOQXTIMJUGQYDGMRZGEZ2M4TFMFZW63VHNVSW45DJN5XKKZLWMVXHJLDGN5XXIZLSL5RWY2LDNM#issuecomment-4144032913>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/BHHMUCOTBTFGPEYTYCWKNPL4S2YLLAVCNFSM6AAAAACXB5ODFSVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHM2DCNBUGAZTEOJRGM>. You are receiving this because you were mentioned.Message ID: ***@***.***>

[kjk]

mupdf bug report: https://bugs.ghostscript.com/show_bug.cgi?id=709284

[dcysarz]

SumatraPDF 3.6.1
Windows 10

Bug: My problem seems to be related to the described issues. In my case it involves the entire figure/diagram. If you look at the pdf-file (see link below) figures 2, 4 and 5 are entirely black (only the diagram, the caption is OK).

pdf-file to reproduce the problem:
pdf-file

Expected behaviour: The diagram should be displayed with white background

My guess:
I also wrote some scientific papers and I guess that this paper contains different file types for the figures / diagrams and at least one file-type or graphics-encoding (jpeg, tiff, png?) is not displayed correctly.

[GitHubRulesOK]

@dcysarz the problem with your file at simply first glance is there are 2 pages overlaid and thus blending very badly

[GitHubRulesOK]

@dcysarz
same issue on page 5 !

remove the duplicates and all is good

[dcysarz]

@GitHubRulesOK
Thank you for your quick reply and solution!