It’s difficult. Lemmy doesn’t supply a list of replies when we retrieve the post over ActivityPub, nor votes. We could probably get that data by calling their API but that feels wrong.
The fediverse has developed a convention of pasting urls into the search function in order to retrieve a post but I don’t think it’s intuitive for new users to do that; a search tool is for searching, not importing. It’d be great to find a better way to integrate this feature.
That’s weird - I use PieFed with FF on Android daily and haven’t seen this. Can you do a screen shot?