When I use the command:
/setblock ~ ~ ~ nether_portal
to create a portal and go to the nether.And you'll surprised to discover you cannot come back.
Please look at this video and you can find out the strange reason.
MC-148752
Nether Portal Block doesn't have any cooling time.
Resolved
Awaiting Response
0
Wasn't able to reproduce. Does this occur in 1.14-pre5?