Bulk post “add media” button and “text” tab not working in Safari (MacOS)

Hi. Congratulations for version 4; it’s great.
I’m having problems with new version 4 using Safari when “Create New Bulkpost”:
– Button “Add Media” and tab “Text” are not working. I have tried using Firefox and it works.
– There is also a problem when trying to select all founded entries. The checkbox to select all doesn’t appears until you refresh changing from “Manage Post” to “Add New” and going back to “Manage Post”.
I wish you can arrange this issues.
Thanks in advanced.
Roberto