Bug in Adobe Reader when opening PDF's in a sharepoint library

Question

I can consistently reproduce this problem.
A document library containing pdf's where the number of items exceeds the list view threshold.
The documents are locked and checked out to another user.
When a non-admin user clicks the pdf link, the following CAML query is sent to the server (presumably to see which user has the document checked out) - *However this CAML query fails because the list view threshold is exceeded*
Here is an example of the caml query adobe generates
<?xml version="1.0"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><SOAP-ENV:Body><GetListItems xmlns="http://schemas.microsoft.com/sharepoint/soap/"><listName>{27277C40-B0FD-4E3C-9709-93434DDCCB95}</listName>
<query><Query><Where><Eq><FieldRef Name="FileLeafRef"/>
<Value Type="File">32977 - NZ2942.pdf</Value>
</Eq>
</Where>
</Query>
</query>
<queryOptions><QueryOptions><IncludeMandatoryColumns>FALSE</IncludeMan datoryColumns>
<Folder>Account Documents</Folder>
</QueryOptions>
</queryOptions>
<viewFields><ViewFields><FieldRef Name="IsCheckedoutToLocal"/>
<FieldRef Name="CheckoutUser"/>
</ViewFields>
</viewFields>
<viewName></viewName>
</GetListItems>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>
HTTP 500 - List view threshold exceeeded.
This is a bug in adobe and needs to be fixed.
The final error is "The URL you have provided cannot be reached".
Expected behavior - the document opens in read only mode because it is locked (and also because we are using reader and can't edit it)
I see no reason for Reader to send a query to determine who has the document checked out.

Answer 1

You will not get a response from the bug report but they DO read the reports and use them to make future updates.
I notice a lot of the other issues reported here have not been responded to either.
Is that the normal process?
I haven't noticed that at all. In fact, most posts here get results as long as the poster gives enough details. Keep in mind that the answers are coming from fellow users and it is not an official avenue to contact Adobe personnel.