This issue has been closed as 'Won't Fix' due to an extended period of time without updates. If this issue is important to you please let us know by posting on the AnswerHub or UDN, and Epic will re-open the ticket for further review.
When viewing reflections in multiple viewports the reflections will differ from the original viewport.
1.) Download Project file
2.) Play in new Editor Window. ( Default is This )
3.) Look at the text
Expected : Reflections the same across all viewports
Result : Views 2-4 differ from top left Viewport
Head over to the existing Questions & Answers thread and let us know what's up.