Popups appearing empty intellij

Question

I am using intellij idea 14.1.7,

$ java -version java version "1.7.0_79" Java(TM) SE Runtime Environment (build 1.7.0_79-b15) Java HotSpot(TM) 64-Bit Server VM (build 24.79-b02, mixed mode).

Linux : Ubuntu 14.04

When I try to open a project, insert something,find something or anything that opens a popup/dialog box it appears like :

I have tried finding solution but I didn't got anything. Any help would be appreciated.

Answer 1

I think it was some graphic issue in unity. I installed Ubuntu mate environment in Unity and now I am using it around 2 weeks the blank/transparent issue didn't came. But there are other issues which are quite small, like content assist some times don't appear. But dialog/popup boxes are appearing normally now.