Features entries for "commerce_customer_type" disappear on drush fu

On "Features recreate page", there are entries advertised as "Commerce customer profile types (commerce_customer)".
Enabling these and using "Download feature" creates these entries in featurename.info:

features[commerce_customer_type][] = billing
features[commerce_customer_type][] = shipping

(so here it is "commerce_customer_type", not "commerce_customer")

However, drush fu featurename removes those entries again.
This is weird.

I am opening this as "Support request", but feel free to change to "Bug report" if applicable.