Sorry for the late response here, but it does look like things are working as intended.
I know you’ve had quite a few FTP bumps in the past month, but I think your fitness is increasing pretty quickly, and you’re having no issues with the high-level workouts.
I’ve shared your case with the team, as I do think we might be able to tighten things up a bit in the future with edge cases like this, but the bottom line from me is to keep up the good work and accept the FTP changes you’re getting. 
Let me know if you have any issues with workout difficulty moving forward, but nice job on your progress! 