Items which recycle into themselves (instead of recipe ingredients) and have a recipe producing more than 1 item per craft (biter egg, uranium fuel cell, plastic bar, ...) seem to still use the old (pre 2.1.13) recycle time calculation.

Example:
Uranium fuel cell recipe produces 10 items in 10 ...

The number you see is the contents of entire pipe system connected to the electromagnetic plant.

This is due to this change in version 2.1.11:

• Assembling machines with passthrough ports will consider the entire fluid segment as available for crafting.