Multiple choice disallowing answers
On certain multiple choice questions in "Spanish from English" I get a "Correct" notification when I submit the answer; however, after I finish the practice it is marked wrong on the scorecard. This bug only happens when there are multiple correct answers. It has been occurring for the past week or two.
I am using Chromium 58.0.3029.96 (should be equivalent to the same version number for Chrome) on Linux Mint 17.1