Comment not found in translated node expect original language

Changes are made on on 11.x (our main development branch) first, and are then back ported as needed according to the Core change policies → .

Starting to work on this issue.

Just for FYI, I looked into the issue.

I created the node and then translated it.
Then I commented on the english translation. It is showing fine on the english translation.
Then I viewed the french translation and commented on the french translation. However, the comment on the french translation is attaching to the english translation. I think I will need to correct the comment to parent entity mapping based on the parent entity's language.

Continuing on the issue, so far no success but I will get it there. :)

Tests failed. Assigning back to me.