Bug.

[[W]TR1pin]

TR1pin here with another Bug

If somone is On jail And you Tp to them You are in jail place But NoOne is there
Walk over read marker Nothing happens
Only way is to /taxi out or /kill

Would Be nice to Have read marker to Telle you Out
Not that big of a bug ,but its a bug

[TEF]

It's not really a bug as you're not supposed to teleport to someone who is jailed. In fact, teleportation to jailed players should be disabled altogether, but until then remember to always use /locate [ID] before you teleport to someone. It will save you time and effort, as well as prevent mistakes such as this.

[Jay]

Teleporting to jailed players will be disabled in 2.90. Thanks for the report.