Steps to reproduce:

1. Start excel 2010.
2. Press CTRL+g
3. Type b2:b11.
4. try to move with arrow keys or deleting with backspace.

Actual behavior:

Blank is spoken.

Expected behavior:

Deleted characters should be announced and characters to which cared moves should be spoken.

System configuration

NVDA installed/portable/running from source:

Installed

NVDA version:

NVDA version alpha-16405,19bb21c2

Windows version:

Windows 7 x64

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

Microsoft Excel 2010 32-bit

Other information about your system:

The developer info for this field is as follows.
Developer info for navigator object:
name: u'Odwo\u0142anie:'
role: ROLE_EDITABLETEXT
states: STATE_FOCUSABLE, STATE_FOCUSED
isFocusable: True
hasFocus: True
Python object: <baseObject.Dynamic_IAccessibleUnidentifiedEditWindowNVDAObject object at 0x056734F0>
Python class mro: (<class 'baseObject.Dynamic_IAccessibleUnidentifiedEditWindowNVDAObject'>, <class 'NVDAObjects.IAccessible.IAccessible'>, <class 'NVDAObjects.window.edit.UnidentifiedEdit'>, <class 'NVDAObjects.window.edit.RichEdit'>, <class 'NVDAObjects.window.edit.Edit'>, <class 'NVDAObjects.behaviors.EditableTextWithAutoSelectDetection'>, <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=476, top=394, width=261, height=14)
value: None
appModule: <'appModuleHandler' (appName u'excel', process ID 5196) at address 5261370>
appModule.productName: u'Microsoft Office 2010'
appModule.productVersion: u'14.0.7224.5000'
TextInfo: <class 'NVDAObjects.window.edit.EditTextInfo'>
windowHandle: 4588610
windowClassName: u'EDTBX'
windowControlID: 1027
windowStyle: 1409286272
windowThreadID: 5624
windowText: u'b2:b11'
displayText: u'b2:b11'
IAccessibleObject: <POINTER(IAccessible) ptr=0x70bd060 at 548eda0>
IAccessibleChildID: 0
IAccessible event parameters: windowHandle=4588610, objectID=-4, childID=0
IAccessible accName: u'b2:b11'
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?

Yes it is a regression. This is working correctly in NVDA 2018.1 and failing in NVDA 2018.2 and above
cc @michaelDCurran @feerrenrut This is pretty serious for those using Excel 2010, because it fails similarly in many more edit fields. Can this be assigned P2 ad least and fixed asap?