So i have multiple bugs that i would like to report.

1. So, i went into a nether portal in creative and somehow accidentally going back through to the overworld. but the problem was that some of the chunks had vanished and the world outside of my render distance wasn't loading when i went towards it, like the game thought i was in the centre of the loaded area.
2. I am not really sure if this is meant to be in game, but i have found that you can find/spawn ghasts and vindicators i peaceful.

Unfortunately, i was unable to take pictures but i just want to help Mojang fix bugs, as intended with the 1.15 update