我有这个问题，因为我安装了这插件。我尝试了主题，但是当我决定原始和交换回它的工具提示被打破了这种方式。不幸的是，我设法解决它的唯一方法是重新安装eclipse。

I had this problem because I installed this plugin. I tried out the themes but when I decided on the original and swapped back to it the tool tips were broken in this fashion. Unfortunately the only way I managed to fix it was by "reinstalling" eclipse.