There is a bug on ModalRemote.js file (and the minified file of course).
on line 132 there is no event parameter that represent event variable, although this work on some browser like chrome, but for some browser like Mozilla and IE got this issue as an error that implies all button on modal (like delete button) inactive. error message = ReferenceError: event is not defined; on Mozilla
This patch solved this problem.
There is a bug on ModalRemote.js file (and the minified file of course). on line 132 there is no event parameter that represent event variable, although this work on some browser like chrome, but for some browser like Mozilla and IE got this issue as an error that implies all button on modal (like delete button) inactive. error message = ReferenceError: event is not defined; on Mozilla This patch solved this problem.