Fix for next word/previous word Eclipse bug?

As far as I know, this isn’t a ruby/eclipse bug, but I certainly haven’t
found a general fix for it, so was wondering if anyone knowledgeable
about the Ruby Eclipse plugin might have suggestions.

In Eclipse (my version at least, which is up to date, according to the
updater), the “Next Word” move command (bound to ctrl-right-arrow,
typically I think) has a bug; it simply goes to the end of the line.
Have others experienced this? Is there a fix?

Much less annoyingly (but still annoyingly), the Previous Word command
stops between whitespace characters, i.e. each space or tab character
seems to be considered a ‘word’.

I haven’t seen any ruby-mode-specific commands to overcome these
problems, but then I really don’t know that much about Eclipse…