Diagnosis:
In OSX ctrl-e will move the cursor to the end of the current line. This works in things like the search box, the post title box, and even the textbox that I'm typing in now, as I file this ticket, but not the box where you type in the post body in Confluence.

Test case:
In OSX, create a new post, type some text, hit ctrl-a: cursor jumps to beginning of line. Then hit ctrl-e.

Expected: cursor jumps to end of line
Actual: cursor doesn't move