UserAgent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.84 Safari/537.36
Platform: 10575.58.0(Official Build)

Steps to reproduce the problem:
1. Download Pearson TestNav app 
2. On the home page, select "Pearson TN Reference" option
3. Enter the below user id/pwd
 LGN237625347 / RQ3DSMDS
4. Click/tap on the compass tool
5. Write a cirle a bit slower than usual
6. Write the second cirle like step 4 and don't release the hold, and while holding, slowly move to next button 
6. Click next button
7. Revisit the Question again

What is the expected behavior?
Drawn compass tool marks should remain unchanged

What went wrong?
Extra compass tool mark is seen

Did this work before? N/A 

Chrome version:  67.0.3396.99  Channel: stable
OS Version:  67.0.3396.99
Flash Version: