The same rule that is applied to onebox titles (max 80 chars) is applied to the Discourse topic title when creating a topic via a link.
I’m fine with the truncation for the generated onebox in the body, but why truncate the title for the topic on Discourse, which allows much longer titles by default, with the same 80 chars limit?
This leads to a lot of topics with awfully truncated titles, although max title length for topic titles is a lot higher (even by default Discourse) .
For the topic title, the
max topic title length setting/limit should be considered/applied for title truncation, not the fixed 80 char one used for the rendered oneboxes in the body text IMHO.