A few display issues

[jasonmarcher]

I'm having a few display issues using PowerTab through PowerShell.exe.

When scrolling down for a while and then back up, occasionally "]" characters remain at the end of the status message, and sometimes the lines of text get offset by one character, as the attached screenshot demonstrates.

Also, when I press "Escape" to leave the tab expansion menu, pressing "Tab" again does not show the menu again. (This may be expected behavior; I am uncertain.)

Thanks for any help!

Originally reported on CodePlex by dennisfile.