You used to be able to use execute fill commands in a command block and it would execute at the player. Now with the new commands it executes at the player and the command block deleting the command block. 

How to reproduce: type  execute as (player name) run fill ~30 ~20 ~30 ~ ~ ~ air in a command block

Results: a 30 by 20 by 30 area gets deleted but for some reason it executes at both the player and command block deleting the command.

Expected Results: It to work like the old execute fill command where it would only execute at the player. 

I just have one question. Where's the old fill commands? In my opinion they worked perfectly fine. I've made a post already about this but it was set to Resolved...when this issue is far from being resolved