UserAgent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36

Example URL:
Microsoft Dynamics CRM 2013

Steps to reproduce the problem:
1. Open a Dynamics CRM 2013 record that has lookups (like cases)
2. Click the lookup button
3. Dynamics generates an error

What is the expected behavior?
Lookup should function without error.  This worked previously.

What went wrong?
CRM generates the following error:
Unhandled Exception: System.ServiceModel.FaultException`1[[Microsoft.Xrm.Sdk.OrganizationServiceFault, Microsoft.Xrm.Sdk, Version=6.0.0.0, Culture=neutral, PublicKeyToken=]]: System.NullReferenceException: Microsoft Dynamics CRM has experienced an error. Reference number for administrators or support: #3E6B48DCDetail: 
<OrganizationServiceFault xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.microsoft.com/xrm/2011/Contracts">
  <ErrorCode>-2147220970</ErrorCode>
  <ErrorDetails xmlns:d2p1="http://schemas.datacontract.org/2004/07/System.Collections.Generic" />
  <Message>System.NullReferenceException: Microsoft Dynamics CRM has experienced an error. Reference number for administrators or support: #3E6B48DC</Message>
  <Timestamp>2016-06-16T06:50:15.7173311Z</Timestamp>
  <InnerFault i:nil="true" />
  <TraceText i:nil="true" />
</OrganizationServiceFault>

Does it occur on multiple sites: Yes

Is it a problem with a plugin? No 

Did this work before? Yes Before 2016-MAY-25 v50.0.2661

Does this work in other browsers? Yes 

Chrome version: 51.0.2704.103  Channel: stable
OS Version: 6.1 (Windows 7, Windows Server 2008 R2)
Flash Version: Shockwave Flash 22.0 r0

I believe this is the same bug which was reported for  Chrome 38, which has been re-introduced in this release. Here is the link to bug: https://bugs.chromium.org/p/chromium/issues/detail?id=422350