Sounds like MCPE-115933
I'm having the same issue. Go from the Overword through a nether portal that has an exact pair in the Nether. But instead of arriving there, end up in the Nether with the same coordinates as the portal in the Overworld. Sometimes there's is no return portal shown. If there is, it will transport to the "correct" portal in the Overworlds based on the 8:1 ratio, but it's not at all where I started.
Last time it took me 4 hours to walk back to my original overworld location.
I'm playing Bedrock Edition on Windows 10. The world that I'm experiencing this on is running 1.16.220 (Build 5667935, Branch r/16_u4) , is local, with an "Infinite" World Type.
Hate to bump, but in regards to remi's comment
Well, It wasn't the intel graphics fault. It was caused by EvolveHQ. When I shut down Evolve then it launched properly. And again, this wasn't a dupe.
I don't see how this issue is caused by my graphics driver if shutting down evolve worked.
I just confirmed that this issue is still present in MC non-beta 1.8.3, and shutting down evolve fixed it.
I can confirm the behavior that @Baron Samedi reported. I'm using Windows 10 v1.17.34
If the parrot is on your shoulder is the key. I had to get the parrot off my shoulder (and killed it to keep it from coming back).