Spawn Chunks not working if world border covers it

When worldborder is set in the "death zone" and your spawn chunks are in it none of the spawn chunks will load, breaking all redstone/command blocks.

Example:

You have /setworldspawn at 5000, 120, 0
do a clock at those coordinates (simple hopper clock) and output a comparator and a command block doing "say hi".
Check to see if you're spammed "[@] hi",
If yes, go to 0, 120, 0 then do these commands:
/worldborder center 0 0
/worldborder set 1000

Watch that after 10 seconds your "[@] hi"'s will stop and the chunks are no longer loaded.