What happens?:

On some open dictionary projects, especially on some of the major Wiktionary project languages ​​such as French, German and Russian, sections in entries use templates inserted between the section syntax to unify section names, for example:

=== {{S|noun}} ===

will come out

=== noun ===

Previously this usage did not cause any errors and it produced the correct table of contents like this:

Contents
1. noun
2. verb

but for some reason, older themes, except the new Vector 2022, this usage makes the table of contents appear from <span> </span> in each section like this:

Contents
1. <span>noun</span>
2. <span>verb</span>

See the link below to confirm the error.

• https://fr.wiktionary.org/w/index.php?title=help&useskin=monobook
• https://fr.wiktionary.org/w/index.php?title=help&useskin=timeless
• https://fr.wiktionary.org/w/index.php?title=help&useskin=vector
• https://fr.wiktionary.org/w/index.php?title=help&useskin=minerva

This bug just appeared after update 1.45.0-wmf.22 (rMW3d62d3a9fed9) was deployed yesterday, old version before this version did not have this bug.

See also the testcase and description in duplicate T406755: Vector TOC started to show <i>-tags instead of showing the italic text used in the headers

https://nl.wiktionary.org/wiki/proscriptie?useskin=vector