Removed commandblock with /setworldspawn command still works

The Bug:

When putting a command block, then setting in repeat mode and typing /setworldspawn command on it, it still works if that is removed.

 

How to reproduce:

1. Put the command block
2. Set it in repeat mode
3. Write command: 

   /setworldspawn [any x y z] 

1. Remove command block
2. Go to the spawn point (it will be the same as spawn point from command block, although the command block is removed)

 

Observed:

Spawn point coordinates are still from non-existent command block.

 

Expected:

Spawn point coordinates are in the same condition as before.

 

Attachment:

https://drive.google.com/file/d/1HCrAJ4pGYviwvoiLqaj6qKNpc9AtLal8/view?usp=drive_link