When importing a translation with Auto accept finished translations enabled on the translation provider, the new translated value doesn't get added to any paragraphs.
If you disable the Auto accept finished translation option and accept the translation from the Job items review form, it all works as excepted.
Looking at one of the paragraphs fields table you can see that a new revision is created with the new translation. But then another revision is created with the old value, and that's the paragraph that gets referenced on its host.
Using 8.x-1.11 it works as expected.
I did some digging and it looks like this bug was introduced in #3162640: Support translation of translatable fields with untranslatable target types → . Reverting the commit on 8.x-1.12 fixes the issue.
You expect the new translation ("Translation 2") to be available on the paragraph. Instead the initial translation ("Translation 1") is there.
Find what causes the issue and fix it. Do we add a new test for this? I'll continue investigating today and next week and try to do a merge request if I find something.
Fixed
1.0
Source: Entity
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
I've spotted an issue with the above fix, I've opened a separate issue here
https://www.drupal.org/project/tmgmt/issues/3370882
🐛
Paragraphs translations aren't always updated
Fixed
Basically the above is calling $target_entity->needsSave(); which is a getter rather than a setter, I believe it should be calling $target_entity->setNeedsSave(TRUE);