GitHubRulesOK
commented
3 years ago @kjk Note these files are built in LaTeX via several methods thus there can be variable results, in this case it starts \include{acronyms} which preloads \usepackage[draft]{pdfcomment}
Another more common related package is "HyperRef" which builds internal Hyperlinks that are more frequently encountered and a separate issue.
Above quoted compiled sample is acronyms_with_tooltip_test.pdf
Which sometimes targets a tooltip in Acrobat 9 (in above sample about 30% worked in my Acrobat Reader) But in MuPDF some are not visibly processed (above sample shows none as valid screen annotation but the ones that do work in Acrobat 9 are detected but not shown as considered invalid) and in other cases where detected as valid only shows a floating blank box for those usage cases see tooltip_test.pdf Where only 5 are detected as empty screen annotations (non visible content)
thus Acrobat can consider some as invalid and MuPDF can see them in variable ways but overall MuPDF does not handle valid ones well.
kjk
tobidelbruck
5inf
SumatraPDF no longer shows PDF annotation popup tooltips that is expected to pop up as they do in Adobe Reader or Acrobat. SumatraPDF version 3.0.0 showed them fine.
SumatraPDF v3.3.3 does not show the tip which Acrobat shows when hovering over "BRAM" as seen in screen shot below
See https://www.overleaf.com/read/fyvbnxpwwjss for overleaf project that generates a test PDF with embedded popup tooltip.
The resulting PDF is at https://www.dropbox.com/s/sc2jacft6huva3d/acronyms_with_tooltip_test.pdf?dl=0