Thank you for taking the time to get a repro case over to me. I was able to verify what you are reporting and have gone ahead and entered a bug report for the issue (UE-30267). I will say I did find a temporary workaround to the swimming of the textures, by disabling the ‘Separate Translucency’ option within the material editor.
Once the fix has been made it will be added into an upcoming full engine release or hotfix, and added to the list of known issues. If you have further questions or need additional assistance, please let me know.
Thank you,