Matching allows more than one definition in match box (present throughout entire book)

[GalinaP7]

Bug Described
Matching allows more than one definition in match box (present throughout entire book):
-1.8 Matching
-2.5 Matching
-Checkpoint 3.3.2. matching
-Checkpoint 3.6.1. matching
-3.12 Matching
-Checkpoint 3.13.3. matching
-Checkpoint 4.3.1. matching
-4.14 Matching
-Checkpoint 4.15.3. matching
-Checkpoint 5.2.1. matching
-5.12 Matching
-6.16 Matching
-Checkpoint 7.3.5. matching
-7.10 Matching
-Checkpoint 8.2.2. matching
-8.10 Matching
-Checkpoint 8.11.2.
-Checkpoint 9.5.3.
-Checkpoint 9.7.1.
-9.13 Matching
-Checkpoint 10.7.1.
-10.12 Matching
-Checkpoint 10.13.1.
-Checkpoint 11.2.3.
-Checkpoint 11.5.1.
-11.10 Matching
-Checkpoint 11.11.2.
-Checkpoint 11.11.3.
-Checkpoint 12.5.2.
-12.14 Matching
-Checkpoint 13.4.1.
-Checkpoint 13.6.1.
-13.12 Matching

screenshot shows example

Screenshot

[pearcej]

This looks like the wrong question type was used. This one looks like it would be better as multiple choice.