Underline looks like strikethrough

[sati-bodhi]

Describe the bug Underline markup looks like strike-thorough

Steps to Reproduce the behaviour

1. Open pdf file in pdf-view.
2. Select region (highlight a word)
3. pdf-annot-add-underline-markup-annotation

Result:

What is the expected behaviour? Underline should be closer to the bottom of the characters.

Desktop Please complete the following information:

• OS: Ubuntu 22.04
• Emacs Version: 2802
• Poppler Version: pdftocairo version 22.02.0

Your pdf-tools install Please complete the following information:

• pdf-tools Version: [M-x package-list-packages -> Search for pdf-tools -> Hit Enter and copy all the details that pop up in the Help buffer]

Version 1.0.0

• pdf-tools customization / configuration that you use

;;;; Org-pdftools
;; Run `pdftools-install` to initialize.

(use-package! org-pdftools
  :config
  (setq
   org-pdftools-root-dir #'~/Zotero/storage
   org-pdftools-search-string-separator "??")
  (with-eval-after-load 'org
    (org-link-set-parameters "pdftools"
                             :follow #'org-pdftools-open
                             :complete #'org-pdftools-complete-link
                             :store #'org-pdftools-store-link
                             :export #'org-pdftools-export)
    (add-hook 'org-store-link-functions 'org-pdftools-store-link))
  (pdf-loader-install)

(add-to-list 'pdf-annot-list-listed-types 'square)
  )

Additional context

• If you are reporting a crash, please try and add the Backtrace / Stacktrace of the crash.
• If you are reporting a bug, please try and attach an example PDF file where I can reproduce the bug.
• If you can attach screenshots or recordings, that is a great help
• Please try reproducing the bug yourself on Vanilla Emacs before reporting the problem.

[tongjie-chen]

Does it show the same on Evince? When you select the line, is the selection's bottom border at the current underline location?

If so, that's the PDF's text layer's problem.

[sati-bodhi]

I've tested out on Okular and Evince. The underline looks normal.