The encoding of the XML document. The actual and specified in encoding = ""

Description of the Issue

The encoding of the XML document is determined from the information in the title of this document, and not from the actual character encoding.

Steps to Reproduce the Issue

1. Open an XML document whose contents are encoded with Windows-1251. And the title says "encoding =" Windows-1251 "
2. Change encoding = "Windows-1251" to encoding = "UTF-8". Save and close the document.
3. Reopen this document.

Expected Behavior

The program should determine that the text in the Windows-1251 encoding, despite the header and display the content correctly. The bottom panel of the encoding display should be Windows-1251.

Actual Behavior

The program displays the document incorrectly, and the bottom panel displays the encoding specified in the header of the XML document (UTF-8, which we wrote in the title), not the actual one.

Debug Information

Notepad++ v7.3.3 (32-bit)
Build time : Mar 8 2017 - 03:37:37
Path : C:\TCPU68\Programm\Notepad++\notepad++.exe
Admin mode : OFF
Local Conf mode : ON
OS : Windows 10 (64-bit)
Plugins : mimeTools.dll NppConverter.dll NppExport.dll NppTextFX.dll PluginManager.dll

No source files or tests are identified in the issue. Reproduce the three steps with a Windows-1251 XML document and inspect both the displayed text and the bottom-panel encoding; done means the document remains readable and the panel reports Windows-1251 despite the changed XML declaration.