If using Dynamics CRM 2013 UR1 web client with IE8 browser, you may see that the there is no dropdown next to the name, if the for example, account name, has a large length of characters.

The steps to see this are:
1) Open CRM 2013 in Internet Explorer 8
2) Create a new Account
3) Enter “Microsoft Corporation” in Account Name
4) Try to access related entities in Navigation bar -> the arrow to do that is not available
This is a known issue and the fix will be released in Update Rollup 2 for CRM 2013.

This does not affect IE9, IE10, Chrome browsers so please use these browsers until UR2 is released.

Pre UR2

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Post UR2

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Best Regards

Dynamics CRM Team