Steps to reproduce:

1. Open Dev-C++.
2. Create empty file and type anything.
3. Start selecting with shift and arrows or with any other selection command.

Actual behavior:

Nothing is announced, but text is selected.

Expected behavior:

The selection should be announced like in other programs.

System configuration:

NVDA Installed/portable/running from source:

installed

NVDA version:

version alpha-16247,fbae6b0b

Windows version:

Windows 7 x64

Name and version of other software in use when reproducing the issue:

Dev-C++ version 5.11

Other information about your system:

With JAWS the selection isn't announced either, but by setting custom highlight it can be worked around.
The developer info for the editor control is as follows:
Developer info for navigator object:
name: None
role: ROLE_EDITABLETEXT
states: STATE_FOCUSABLE, STATE_FOCUSED
isFocusable: True
hasFocus: True
Python object: <baseObject.Dynamic_IAccessibleDisplayModelEditableTextWindowNVDAObject object at 0x036B6A90>
Python class mro: (<class 'baseObject.Dynamic_IAccessibleDisplayModelEditableTextWindowNVDAObject'>, <class 'NVDAObjects.IAccessible.IAccessible'>, <class 'NVDAObjects.window.DisplayModelEditableText'>, <class 'NVDAObjects.behaviors.EditableText'>, <class 'editableText.EditableText'>, <class 'NVDAObjects.window.Window'>, <class 'NVDAObjects.NVDAObject'>, <class 'documentBase.TextContainerObject'>, <class 'baseObject.ScriptableObject'>, <class 'baseObject.AutoPropertyObject'>, <type 'object'>)
description: None
location: RectLTWH(left=168, top=124, width=1194, height=550)
value: None
appModule: <'appModuleHandler' (appName u'devcpp', process ID 5124) at address 5bf35b0>
appModule.productName: u'Dev-C++'
appModule.productVersion: u'5'
TextInfo: <class 'displayModel.EditableTextDisplayModelTextInfo'>
windowHandle: 1245636
windowClassName: u'TSynEdit'
windowControlID: 1245636
windowStyle: 1442906112
windowThreadID: 6096
windowText: u''
displayText: u''
IAccessibleObject: <POINTER(IAccessible) ptr=0x6adde0 at 58e98a0>
IAccessibleChildID: 0
IAccessible event parameters: windowHandle=1245636, objectID=-4, childID=0
IAccessible accName: None
IAccessible accRole: ROLE_SYSTEM_CLIENT
IAccessible accState: STATE_SYSTEM_FOCUSED, STATE_SYSTEM_FOCUSABLE, STATE_SYSTEM_VALID (1048580)
IAccessible accDescription: None
IAccessible accValue: None

Other questions:

Does the issue still occur after restarting your PC?

Yes

Have you tried any other versions of NVDA?

No