# Nightly 8.1 Changelogs - 2021

**URL:** <https://forum.inductiveautomation.com/t/nightly-8-1-changelogs-2021/42410>\
**Category:** Ignition Early Access\
**Created:** [January 19, 2021, 7:32pm UTC](https://forum.inductiveautomation.com/t/nightly-8-1-changelogs-2021/42410 "2021-01-19T19:32:07Z")\
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**Author:** ![sreis](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/sreis/32/14631_2.png) [@sreis](https://forum.inductiveautomation.com/u/sreis)\
**Post date:** [August 3, 2021, 3:30pm UTC](https://forum.inductiveautomation.com/t/nightly-8-1-changelogs-2021/42410/129 "2021-08-03T15:30:45Z")

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Nightly Changelog: 8.1.9-b20210803

## Platform

**2935: Named Query editor "undo" operation with empty undo stack clears the query**  
Fixed an issue where 'Undo' in the named query editor could remove the default sample query text.

**1872: Allow overriding JSON serialization behavior in system.net.httpClient**  
Added the ability to override the JSON serialization behavior of a given system.net.httpClient() instance.

## Data Model

**3319: UDT tag values are unexpectedly being overridden if there's an override set elsewhere**  
XML tag imports could generate null value overrides for member UDT tags, when no such definitions were in the file.

**2606: Block Transaction Group With Value Mode set to Name on Block Item Stores Source Value Instead of Item Name**  
Using the 'Name' property in the 'Value Mode' of a block item should return the item name just as it did in 7.9.

**2482: RemoteException thrown when 8.1 gateway queries history annotations from 7.9 gateway through remote tag provider**  
History annotation queries are no longer attempted through remote tag providers if the remote gateway does not support annotations (versions prior to 8.1.4).

## Connectivity

**3612: system.opc.writeValues fails all writes if one fails**  
Fixed a bug with system.opc.writeValues where an out of range value being written to a Node with an unsigned datatype would cause the entire call to fail and not just the writes with out of range values.

## Security

**2734: Update BouncyCastle to avoid Vision Client reconnect loop after loading a PDF**  
Updated the BouncyCastle library to version 1.69, which may resolve some intermittent issues that presented as "ClassCastException: class org.bouncycastle.jcajce.provider.asymmetric.edec.BCXDHPublicKey cannot be cast to class java.security.interfaces.XECPublicKey (org.bouncycastle.jcajce.provider.asymmetric.edec.BCXDHPublicKey is in unnamed module of loader java.net.URLClassLoader @645a8e69; java.security.interfaces.XECPublicKey is in module java.base of loader 'bootstrap')" in Vision clients using the PDF Viewer component.

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