Actually this issue is not limited to Wikisource pages. If I click in the Edit Summary box, and then click Bold or Italic, text is inserted in the main text box, which clearly was not my intention, and may lead to errors, because in that moment I'm not watching the text box, I'm watching the edit summary, and I may not notice what just happened. WikiEditor should not insert in a box if the focus is not there.

It is worth noting that the CharInsert extension, responsible for the "edit tools" section generally present at most wikis at the bottom of the page, actually works with all textarea and input boxes, including the Edit summary, and it also works for the ProofreadPage header and footer boxes. It just puts the text where the focus is.

So it should be possible to apply the same logic to make WikiEditor also work in the same way. Aside from Wikisource, this could be useful in general: I know that wikitext syntax in the edit summary is limited, but I may need to insert some special characters or a link through the WikiEditor toolbar.

I confirm and I think this is a bug, because it may insert wrong characters somewhere in the main Wikisource field, and the user may not notice it.

If I'm correct, that could be easily fixed by checking that the focus is inside the wpTextbox1 textarea before inserting or replacing characters at the caret position. Something like this in WikiEditor/modules/jquery.wikiEditor.toolbar.js:

.on( 'click', ( e ) => {
   if(document.activeElement.id != context.$textarea.attr("id")) {
    alert("This action cannot be used outside the main editing field");
    return false;
  }
  ...
}

This modification could be applied at line 575 in https://github.com/wikimedia/mediawiki-extensions-WikiEditor/blob/master/modules/jquery.wikiEditor.toolbar.js

Change #1277241 had a related patch set uploaded (by Happy5214; author: Happy5214):

[mediawiki/extensions/WikiEditor@master] Ignore most text modifications when main text area isn't focused

https://gerrit.wikimedia.org/r/1277241

Test wiki created on Patch demo by TheDJ using patch(es) linked to this task:
https://14f5ef1563.catalyst.wmcloud.org/w/

Change #1277241 merged by jenkins-bot:

[mediawiki/extensions/WikiEditor@master] Ignore most text modifications when main text area isn't focused

https://gerrit.wikimedia.org/r/1277241

Ctrl+K dialog is not inserting wikilinks. Is it because of this change?

https://www.mediawiki.org/wiki/Help_talk:Extension:CodeMirror#c-FoeNyx-20260713131800-Regression_in_link_insertion_feature_?

@happy5214 @TheDJ The deployed patch did not help with this issue, yet causing new issues (T296396#12117120 and T431919).

Test wiki on Patch demo by TheDJ using patch(es) linked to this task was deleted:

https://14f5ef1563.catalyst.wmcloud.org/w/