The problem is that the table wikitext is buggy there. It is missing a closing tag (in reality, it is missing a newline break. |-|} .. See https://en.wikipedia.org/w/index.php?title=Polycarbonate&action=edit&oldid=563700122)

The PHP parser output for this is also broken (see https://en.wikipedia.org/w/index.php?title=Polycarbonate&oldid=563700122#Manufacturers_and_brands and where the table has ended up).

We could improve Parsoid to detect some scenarios like this, but it is currently lower priority. Fixing the table by adding a line break between "|-" and "|}" should fix the issue for now.

Sample wikitext snippet for our use later:

{|

abc

This was fixed a very long time ago (around August last year), but I didn't spot this report until just now; my apologies.