Steps to reproduce

• Hook up the WPF control from the dev/zorio/wpf-uia-tree branch into a simple WPF application.
• Print text to the screen (e.g. "foo bar baz\r\nfoo2 bar2 baz2")
• Attempt to navigate said text with NVDA

Expected behavior

Word, character and line navigation should work as expected.

Actual behavior

All navigation forms appear to skip entries moving backwards and get stuck moving forwards, for example, I have observed the following:

• Reading the line "foo bar baz" from right to left as word units ends up reading out "baz, b, foo"
• Attempting to read the same line left to right reads out "foo" continuously.
• Reading the characters in that line will exhibit similar behaviour, unable to navigate rightwards and skipping entries when navigating leftwards.