Undo history lost in markup editor when switching editor tabs (Firefox)

[silverwind]

Description

1. Write a comment and paste some text into the textarea, CTRL-Z works to undo pasted content
2. Switch to the "Preview" tab
3. Switch back to "Write" tab
4. CTRL-Z no longer works, the edit history is forgotten

This is a Firefox-specific bug, works fine in Chrome.

Gitea Version

main

Browser

Firefox 148 on MacOS

[wxiaoguang]

Tested:

• wiki
• new issue
• comment reply
• edit issue content

unable to reproduce

[silverwind]

Maybe it is browser-specific. I tested in Firefox 148, MacOS.

[silverwind]

Works in Chrome, so yes this is a Firefox bug.

[wxiaoguang]

Hmm, I am using Chrome.

It is Firefox's bug

https://jsfiddle.net/wkucr65n/

<button>toggle</button>
<textarea id="t"></textarea>


document.querySelector('button').addEventListener('click', ()=>{
  const el = document.querySelector('#t');
  el.style.display = el.style.display === 'none' ? 'block' : 'none';
})

[wxiaoguang]

Not sure whether really worth to do more for this case.

https://chatgpt.com/share/6992db58-9768-8001-a0ad-8466f7fa6cbc

[silverwind]

visibility: hidden combined with setting width/height to 0 or moving off-screen may work and act the same as display: none.

[silverwind]

Bug filed: https://bugzilla.mozilla.org/show_bug.cgi?id=2017065