After a recent upgrade (to a 3.6.5+ version) we start having problems with the select box interface, in the boost theme (and also in bootstrapbase based themes). Hopefully the following pictures explain it. The basic problem is that the not-selected items obscure the save button underneath it.
Has anyone seen this and know a solution?
(EDIT: I see that upgrading to 3.6.6 has solved it. I'm keeping the post in case anyone has a similar problem).
(EDIT 2: https://tracker.moodle.org/browse/MDL-66472 )