Reply To: Yavam inheriting father who was a ger

“The Ri holds that “ein ruach chachomim niche heimenu” is theoretical, not actual; the beraisa means that had the chachomim instituted yerusha for a ger, there would be yibum issues, so they didn’t.”

I think the beraisa was saying that even though there is no yerusha it is still frowned upon by the Rabbis to return it, because that might lead to yibum problems.