Until the bug is fixed, you can use a second account.
You need to place a second account in the location from which the mob / villager enters Nether through the portal, and the main account - at the exit of this portal in Nether.
With the help of the second account, you need to push the resident into the portal. When he teleports to the other side, the account must be left active in AFK to load the territory In the Upper World.
Use the main account to transfer the villager to Nether. He should teleport to another portal without any problems. Since the first portal is immersed by the second account, the transfer bug should not occur.
The method can also be used over a local network, in addition to logging in on Xbox.
Until the bug is fixed, you can use a second account.
You need to place a second account in the location from which the mob / villager enters Nether through the portal, and the main account - at the exit of this portal in Nether.
With the help of the second account, you need to push the resident into the portal. When he teleports to the other side, the account must be left active in AFK to load the territory In the Upper World.
Use the main account to transfer the villager to Nether. He should teleport to another portal without any problems. Since the first portal is immersed by the second account, the transfer bug should not occur.
The method can also be used over a local network, in addition to logging in on Xbox.