LyghtningWither

I believe this is intentional as you want some temporary safety time when going through a portal (but also quite useful for some traps that I've made), however, the items should at least drop when coming through the portal.

I found out that pressing the "open recipe book" button in the inventory and then holding down space spammed the recipe book opening and closing.

This bug tracker (that has bugs that start with "MC") is for the Java Edition of Minecraft, not the Pocket Edition. When creating the bug report, choose "Bedrock Edition" as the bug tracker that you are reporting to.

Yeah, really is.

Done. (well, I uploaded a video, but same difference)

I found out that this bug is stranger than I originally thought.

This bug only happens, as far as my testing goes, when the piston is pushing at least an L-shape of slime blocks, with the farthest slime block having any type of rail on it. I show in the video how just a piston pushing a rail and a slime block doesn't work, just a sticky piston, and even just a regular piston. However, just the L-shape of slime blocks with the rail on top, a TNT duper, and more that include that L-shape produce the bug.

I'll update this report with this new information.

Java Edition.

I have absolutely no idea.

I bred a bee and it works perfectly now. Awesome! Thanks.

EDIT: I can access the world again, and the thing that crashed the game again was the "create backup and load" button. Upon pressing the "I know what I'm doing!" button, I could access the world again.

Also, when I bred a baby bee again (it had disappeared) the game crashed, so I know that this is because of the baby bee breeding.

Yep, I did relog before visiting the nether.

I'm not using any datapacks or custom worlds. It's completely vanilla.

This is called quasi-connectivity, something that started out as a bug, but is basically now a feature in Java Edition. You can read more about it on the Minecraft Wiki: https://minecraft.gamepedia.com/Tutorials/Quasi-connectivity