Status report: the realm option of opening the realm only created a duplicate realm.
How to replicate the bug:
1: renew a subscription for a realm
Apologies, I didn't realize I missed that.
How to replicate bug:
1: type /execute as @e[r=20,rm=1] at @s rotated as (player entity) run -
2: type a regular command using the prior execute command.
3: play the command.
4: watch the chat log for all entities that are affected.
Note: make sure you have sendcommandfeedback gamerule set to true
Now I've got more issues