Planes With texture on it seem move independently in Orthographic mode.

Unity Engine
1

Its difficult to explain the problem. So please download the sample project, its a Unity4.3.4 project Dropbox - Error - Simplify your life

  1. Open temp.unity scene from “Scene Folder”
  2. Run the temp scene in the editor
  3. Press mouse Down on the scene and Drag the mouse to left and right edges of the scene,as if you are trying to drag the scene. keep doing this continuously at a rapid pace, you will notice that some small unity3D icons in the scene may move a bit on its own, even though rest of the icons stay perfectly still.
  4. Use the mouse scroll to zoom in on the running scene and then slowly drag the scene. You should notice that the icons and the background do not move at a uniform speed.

Anybody knows how to solve this issue? or is it a unity bug?

2

Looking briefly at the project, the reproduction steps are not clear. In any case the best way to identify a bug is to actually report one. Please make it clear and concise and refer to specific scenes and steps we can undertake to see the issue - attach screengrabs if necessary: Inside Unity:

Help > Report a bug

That way our QA team can try and reproduce the issue. You can refer to the case number here or when mailing support.

3

I have edited the OP with some more instructions and have reported issue using Report a bug.

4

I Think the issue might be cause by the Pixel Snap shader. When using diffuse shader, the buggy effect is less visible.