Steps to replicate the issue:

• Go to https://bn.wiktionary.org/wiki/%E0%A6%AC%E0%A6%BE%E0%A6%B2%E0%A6%BE%E0%A6%AE.
• Click the edit button beside "বাংলা".

What happens?:

• The user is taken to the template that was used to generate the section heading with the editor opened, in this case, https://bn.wiktionary.org/w/index.php?title=%E0%A6%9F%E0%A7%87%E0%A6%AE%E0%A6%AA%E0%A7%8D%E0%A6%B2%E0%A7%87%E0%A6%9F:-bn-&action=edit&section=T-1.

What should have happened instead?:

• The editor should have been opened for the section that the user actually wanted to edit.

Other information:
The section heading was generated by a template with a title starting (and ending) with a hyphen. T346001 is an issue affecting such headings on mobile.