The previous version was 51.0.2704.63, and the fixed version is 51.0.2704.79.
Update, 27 May 2016:KB 13156 has been published on the Support website to provide additional information about this issue.
Google released an update to Google Chrome (version 51), which was pushed out to the public on Wednesday, May 25th. Unfortunately, this update included a change that impacts anyone using Google Chrome to access ArcGIS Online or Portal for ArcGIS versions 10.3, 10.3.1, 10.4, or 10.4.1.
You may be seeing a screen similar to this after logging in: a blank screen with few or no elements.
What you can do:
What Esri is doing:
The ArcGIS Online team is preparing fixes that will go live this evening.
We are still working on a solution for Portal for ArcGIS.
If you have run into any problems as a result of this bug that impact your workflows, please contact Esri Support Services at 1-888-377-4575.
Originally from Wisconsin, Greg is an avid fan of GIS (and a county collector)! He helps support ArcGIS Pro by developing next-generation map authoring capabilities and writing/editing web help resources.