strange "grab-me" behavior in 2.4

[Wilhelm Sanke]

A stack of a foreign-language-learning suite that uses scrambled
sentences works fine in Metacard 2.3.2.

The chosen text has to be reassembled sentence by sentence. The words of
each sentence are scrambled, put into fields that adapt to the word
length. These fields have to be dragged to the correct field of another
set of fields, i.e. to the field in the sequence that corresponds to the
order of the original sentence. If a sentence is completed, the whole
sentence moves to the main text field, where the sentence is added to
the already existing text., etc.

All fields to be dragged contain the same script.

Now, with Metacard 2.4 and 2.4.1, some of these fields can no longer be
dragged. Very strange!

Although all fields have the same script, fields 3, 4, and 5 - and if
the sentence is longer - fields 9 and 12 can no longer be moved.

I am trying to find out what produces this strange behavior, but the
fact is that the same stack (i.e. the original stack developed in
2.3.2)  works as it should with Metacard 2.3.2.

Regards,

Wilhelm Sanke