The player can get stuck inside of the world border by jumping, walking, or sprinting into it, and stays floating for as long as it presses forward. The player doesn't take any damage from this though.
Additionally, it's not possible to the player to move sideways while touching the world border.
Video
Linked issues
is duplicated by 1
Comments 4
Actually, experimenting with this a bit further, seems like the player getting stuck inside of the world border is a separate but related issue to entities suffocating inside of it (since entities other than the player do not get stuck, they just suffocate, while the player does get stuck, but does not suffocate. I'm going to change this ticket so that it's only about the player getting stuck, please create a new one for the suffocation.
Alright, thanks for the information! I'll get onto creating a new bug report for the suffocation and will keep it more brief. I'll include a new video that will just show the mobs getting suffocated in the border.
MC-189968
This is the new bug report "Mobs Suffocate in World Border"
Hopefully this works for you, and thanks for looking into my bug reports!
Please only put one bug into each ticket in the future. This is okay, so I'm going to leave it open, and I'm able to confirm. Just something to keep in mind for the future. It's way easier for us to manage a single bug per ticket than to carefully extract every single bug from a large ticket with multiple issues in it.