Coach Cycling Plan not syncing correctly to Edge

This is not a unique thread but I was instructed to create a new one by Garmin staff regardless.

The general issue is described here for example:

 RE: Garmin Edge 540 not syncing correct Garmin Coach workouts 

 RE: Garmin Coach workout sync - is it working for anyone? 

The flow is as follows:

  • Start without any training plan in any app / device
  • Verify that I do not see any training plan anywhere
  • Create a Garmin Coach cycling plan via connect.garmin.com
    • I use an upcoming event as the target
  • After syncing, observe the plan showing up on the Garmin Connect app, my Fenix 8 watch, as well as my Edge 1050.
    • I can also confirm that I see the target being my event on the edge so it's 100% the same plan
  • At this point, they are usually in sync.
  • After a few days, the edge shows different trainings than the other apps. Website, Android App and Fenix are in alignment, only Edge differs. Sometimes showing Threshold when the rest wants to recover. 
  • Pausing / unpausing the plan via the website does show up on the edge, sometimes even the workout for today changes, but it almost never matches afterwards.
  • Running a workout through the Tacx app instead sometimes leads to the plan being in sync on the edge the following day only

I am certain I am using the correct widget on the 1050. It is called Garmin Coach, it looks the same as the coach in the other apps, and all of the info regarding training days etc. is synced, but for example today, it just suggests a (for me) unreasonable power in the Edge, while having a correct, plausible power on all other devices.

It is syncing enough to know that I skipped training the last few days after an accident, and put in "rest days" retroactively which I can also see in all other sources, so it's certainly looking at the same plan, but it's just suggesting entirely different workouts. Today it's just a difference in power, other days it's asking for Threshold when everything else says Recovery.

Example from right now:

Coach Plan in App:

Coach Plan on Watch (Matches):

Coach Plan on Edge (doesn't match):