H5P embedded in tabs : text from the button missing in some activities
I am using a WP tabs plugin (based on Bootstrap) to make tabs and embed my H5P activities in them (one activity = one tab).
A strange thing happens with the "check" button : when the H5P content is not embedded in a tab, the check button shows with the text "check" displayed as it should. But as soon as the same H5P content is embedded in a tab, the check button displays only the check icon but the "check" text is not there (as if the button was truncated).
This happens with some activities (Mark the words, Fill in the blanks) but not with others (Drag and drop). Eventually I just need to get focus in the activity to have the "check" text automagically showing.
I conclude that the tabs mess with the H5P check button and I would like to fix this if I can. I've looked a bit in Joubel UI and some CSS but I don't think that it is where I can do something. Can you point out where I should look please ?
Here is a screencast that shows the issue : http://take.ms/nUbXV