Hmm I wish I could reproduce this, but I haven’t missed recent workouts, I have in the past.
Sorry for my persistence, I just think something could be done! 
Here’s what I recall.:
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Missed workouts are rescheduled for your next planned training day.
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You can also begin a missed workout on a scheduled rest day. For example, if your routine is Mon, Tue, Wed and you skip Wednesday, you can start the Wed workout on Thursday.
- Could you try this: go to Coach > Choose the missed day on the calendar > Access Warmup, then tap Start.
- I would reserve the option to edit the weekly schedule if I want to maintain the same number of training days after missing one.
Someone else asked this two weeks ago and confirmed that the workout was rescheduled automatically. Didn’t look at the username and didn’t realise it was also you in the other thread 
Check out this thread for details:
How to take a training I skipped yesterday. Does not show
If this doesn’t do it, maybe someone else has a missed workout and can verify 