Steps to reproduce:
- Go to an arbitrary page on Czech Wikipedia.
- Open visual editor.
- "Insert" > "Template" > Input "Poznámka pod čarou" > "Add template"
- Fill the suggested parameter with arbitrary text.
- Click "Insert".
Instead of inserting the template, the editor gets stuck.
The content of the template is {{#tag:ref|{{{1}}}|group="P"}}.
Browser console reports:
jQuery.Deferred exception: element.querySelectorAll is not a function ve.stripParsoidFallbackIds@https://cs.wikipedia.org/w/load.php?...:1803:856 ve.ce.MWTransclusionNode.static.filterRendering@https://cs.wikipedia.org/w/load.php?...:2149:859 ve.dm.MWTransclusionModel.prototype.insertTransclusionNode/<@https://cs.wikipedia.org/w/load.php?...:2155:196 mightThrow@https://cs.wikipedia.org/w/load.php?debug=false&lang=cs&modules=jquery%2Cmediawiki%7Cmediawiki.legacy.wikibits&only=scripts&skin=vector&version=0upuj5q:49:590 resolve/</process<@https://cs.wikipedia.org/w/load.php?debug=false&lang=cs&modules=jquery%2Cmediawiki%7Cmediawiki.legacy.wikibits&only=scripts&skin=vector&version=0upuj5q:50:269 undefined