Bug with Mathjax/blockquote interaction
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Description
With the following raw html.
<div><div><anki-mathjax></anki-mathjax><blockquote>a</blockquote></div></div>Place your cursor to the right of the letter “a” (in the WYSIWYG). Then hit backspace.
The html will become
<anki-mathjax><img src="data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20id%3D%22mdi-math-integral-box%22%20viewBox%3D%220%200%2024%2024%22%3E%3Cstyle%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1999%2Fxhtml%22%3Esvg%20%7B%20color%3A%20black%3B%20fill%3A%20black%3B%20font-size%3A%2020px%3B%20%7D%3B%3C%2Fstyle%3E%3Cpath%20d%3D%22M19%203H5C3.9%203%203%203.9%203%205V19C3%2020.1%203.9%2021%205%2021H19C20.1%2021%2021%2020.1%2021%2019V5C21%203.9%2020.1%203%2019%203M15.9%206.9C15.9%206.9%2015.2%206.6%2014.9%206.6C14.3%206.5%2013.9%206.7%2013.7%207.7L12%2016.8C11.8%2017.6%2011.5%2018.2%2011%2018.6C10.6%2018.9%2010.2%2019%209.7%2019C8.9%2019%207.7%2018.5%207.7%2018.5L8.2%2017.1C8.2%2017.1%209%2017.4%209.2%2017.4C9.5%2017.5%209.7%2017.4%209.9%2017.3C10.1%2017.2%2010.2%2016.9%2010.3%2016.6L11.9%207.4C12%206.6%2012.4%206%2012.9%205.5C13.5%205.1%2014.2%205%2015%205.1C15.7%205.2%2016.5%205.6%2016.5%205.6L15.9%206.9Z%22%2F%3E%3C%2Fsvg%3E" class="mathjax svelte-npojru empty" alt="Mathjax" title="MathJax" data-anki="mathjax" data-uuid="bd012e03-a578-40e8-bad5-a7ff077fb20f" style="--vertical-center:5px; --font-size:20px;"></anki-mathjax><blockquote><br></blockquote>
It will look like this:This is a minimal example. In practice the occurrence of the bug messes up all the mathjax in the note.
.
The bug does not happen with only 1 non-nested
Version 24.06.3 (d678e393)
Python 3.9.18 Qt 6.6.2 PyQt 6.6.1
Originally reported on https://forums.ankiweb.net/t/bug-mathjax-blockquote-interaction/52395
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the minimal nested-div HTML reproduction in the WYSIWYG editor and inspect the DOM before and after placing the cursor after “a” and pressing backspace. The fix is done when this deletion leaves the MathJax element and blockquote structure intact without affecting other MathJax in the note.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- html
- Domain
- frontend
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100