Can't select next page of characters when using Chinese Intelligent Pinyin input

I’ve been trying to use Pinyin input, but I’ve encountered a problem when the “next” button on the list of character suggestions seems to not work. When I click this “next” arrow:

…it moves the window containing the list of suggestions into the corner of the screen…

…and I can no longer select any of the suggestions.

Any fix suggestions?

I encountered the same problem.