SMN and SCH's pets delay their cast if the player walks backwards with them on follow

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Date & Time: 1/9/2021
Class/Level: SCH and SMN, any level
Party or solo: either
Steps:
1. Place the fairy or SMN pet on follow
2. walk backwards. (In my case holding the "S" key and right mouse button)
3. Execute a pet action, such as SMN's devotion or any of SCH's fairy skills.

The pet will follow you forever. It will not cast until it reaches you. This means that you can delay her cast indefinitely. This is extremely abusable, as it can allow SMN to get a free extra usage of Devotion that is not intended.

I took a video of this, which can be found here: https://youtu.be/QRNFyDkTE_M.

Notice that the pet does not execute Devotion until I stop at around 3:05 in the video.

If you have any questions, feel free to ask. A few friends of mine have experimented pretty extensively with this out of curiosity. I've reported it before, but I think this is clearer on how, and the video should help.