Blocks reappear after breaking in Creative if "delayed block breaking" is turned off

When `delayed block breaking (Creative Only)` is on, it breaks just fine no problem. But when it's off, the blocks often reappear after appearing to break as shown in the video(s).

The block will eventually break, it just takes a few seconds or you have to restart mining a few times before it will.

This is on 1.20.70 realm that I own