I'm having almost the exact same issue as https://github.com/Creators-of-Create/Create/issues/1112 . As they said, edited recipes do not show up. Any recipe added by CraftTweaker does not work in the automated shaped/shapeless crafting.

One major difference, is further down they discovered it was visual only, and the recipe worked but it just didn't show in JEI. My case is not the same, it literally just doesn't work nor does it show up in JEI. Shaped and shapeless recipes have the same problem.

From my testing It seems the mixer doesn't work but the mechanical crafter does, it just doesn't update in JEI.
A temporary solution is I just add the mixer adding function I wrote to the main recipe adding one.

This issue has been marked as stale because it has been inactive for 3 weeks. It will be closed if it remains inactive for another 3 weeks.

This issue has been closed since it has been inactive for 3 weeks since it was marked as stale.

Just want to note that your URL links to issues/url not issues/1112.
Here is the actual link: #1112