Thanks for continuing to report these issues so we can clean up the codebase. The reason you are finding these, (and we are not!) is that they are hidden in the source code (because they are in a , for example), and we are using MAMP, which does not show these on screen, whilst I believe your WAMP does. So many variable factors in programming!
The issue is fixed now in the v13 dev branch, and the changes in the commit below should be backwards compatible to v12: