ikiwiki po plugin does not play well with inline directives

Originally created by @BitingBird on #6907 (Redmine)

See screenshot in attachment.

• Other symptoms: tails#9279 (closed), tails#10124 (closed), tails#9671 (closed). More such tickets are reported regularly.

Attachments

• broken-inline.png
• ikiwiki-inline.zip

Related issues

• Related to tails#9671 (closed)
• Related to tails#9279 (closed)
• Related to tails#10124 (closed)
• Related to #14588 (closed)
• Related to tails#16185 (closed)
• Has duplicate tails#7113 (closed)
• Has duplicate tails#9564 (closed)
• Has duplicate tails#12212 (closed)
• Has duplicate tails#15032 (closed)
• Has duplicate tails#12246 (closed)
• Blocks tails/accounting#15507