Nether portal teleporting player outside hub we created

Okay so i dont know which version recently released on bedrock edition i just know village an pillage released on it. We have a nether portal hub it works fine but months ago i walked through my portal an got teleported a few hundred blocks in the overworld instead. An now today my friend walks through his and he gets teleported to nowhere in the nether an a new portal is created. He steps through to try an go back but it sets up a new over world portal several thousand blocks away. Twice today that happened an we are sure we did the portal hub correct considering this wasnt really a huge problem till now.