Bugs in content types

Hi,

Recently I noticed some H5P exercises not loading on Firefox 50.1.0 (Mac). The browser times out. The console output is:

Hi there!

I've ran into an interesting bug for H5P on WP.

If you create a course presentation that contains a drop and drag element (the ones you can upload pictures and create target drag areas), and then download it...and then later attempt to re-upload to H5P running the 12-06-2016 release, the .h5p file will not re-upload and is rendered corrupted.

I have h5p running on two different sites, it uploaded fine with the drag and drop in the course presentation on the H5p version released on 11-23-2016, but something changed with the 12-06-2016 update. 

Background opacity for draggables field type should be "number", not "text". This is not a bug as such, just illogical, as the field description reads "This should be a number between 0 and 100, where 0 means full transparency and 100 means no transparency".