Same issue on my Xbox One Bedrock. It's been a constant issue but seems to change based on the locations of the nether portal.
Before I made a nether portal that placed me in a different part of the world when I exited, and when exited, part of my world wouldn't render. In that part was my house where my original nether portal was located. The only way I've been able to fix the rendering issue (as when as the loading screen issue later) is by exiting the game and reopening it, the good thing is that it still saves all the changes made to my world before exiting.
After relocating my portal in the nether to connect with the one in the overworld, I started to not be able to load into the world at all, having the dirt block loading screen.
Since before when I loaded through a nether portal that was in a different location, I think that because the chunk that the nether portal is in won't load, it stays stuck on the loading screen indefinitely (Waited an hour to load but wouldn't load in still).
Kaiet4
Same issue on my Xbox One Bedrock. It's been a constant issue but seems to change based on the locations of the nether portal.
Before I made a nether portal that placed me in a different part of the world when I exited, and when exited, part of my world wouldn't render. In that part was my house where my original nether portal was located. The only way I've been able to fix the rendering issue (as when as the loading screen issue later) is by exiting the game and reopening it, the good thing is that it still saves all the changes made to my world before exiting.
After relocating my portal in the nether to connect with the one in the overworld, I started to not be able to load into the world at all, having the dirt block loading screen.
Since before when I loaded through a nether portal that was in a different location, I think that because the chunk that the nether portal is in won't load, it stays stuck on the loading screen indefinitely (Waited an hour to load but wouldn't load in still).