Tooltips not working anymore?

[kalekje]

On an older version of Sumatra, I had no issues with tooltips (plain text). With the new version (or with beta), I am not seeing them.

See the last page of this document for examples: https://muug.ca/mirror/ctan/macros/latex/contrib/pdfcomment/doc/example.pdf

[GitHubRulesOK]

There are a few annotations in that sample that are not "normal" for example the highlight that straddles two pages since annotation should be confined to one page at a time, although hyperlinks will be in one pointing to another page.

However the latex use of tooltips is another offbeat application and reported already in #2083 thus closing as a duplicate extension of that issue

[GitHubRulesOK]

I dont see an issue in pre-release with normal annotation tooltips that are listed as standard annotations, these are classed like AcroForm fields so highlight as pale blue

The issue here are the latex less common ones which are NOT listed in Tracker as annotations.

[tobidelbruck]

Yes, 3.4.6 still has broken tooltip popups. See e.g. https://www.overleaf.com/read/fyvbnxpwwjss where the overleaf PDF built in viewer shows them, and so does Adobe Acrobat Reader and Acrobat DC.
You need to revert back to SumatraPDF 3.0 to get them to work again.
Apparently it is a regression in the underlying PDF engine that Sumatra uses that I could not figure out how to patch with my limited coding skills. See #2083 for details.

[GitHubRulesOK]

Overleaf has them defined by repetition

we can see there are 8 of those

Looking at PDF we see there are 8 entries of this format

8 0 obj
<</BS<</W 0>>/C[]/F 768/FT/Btn/Ff 65536/H/N/Rect[410.476 654.247 427.22 662.416]/Subtype/Widget/T(tooltip zref@0)/TU(Optical Flow)/Type/Annot/AP<</N 28 0 R/D 29 0 R>>>>
endobj

the point to note is these are tagged /Btn widget which MuPDF seems to have stated they did but do not / wont support as per #1914 (comment)