This problem has been reported in the H5P forum here: Hover text for images not working https://h5p.org/node/398028
As far as I know the problem has now been fixed. It does work as expected on my moodle local site running
Moodle 3.7.2 (Build: 20190909)
H5P version 1.19.1 dated 2019081600
H5P library Drag and Drop (1.13.7)
Which version of the Drag and Drop library are you running on your sites?



