In VI insert mode, 'RightArrow' doesn't move the cursor to the end of line

[daxian-dbw]

Environment data

PS version: 7.0.0-rc.1
PSReadline version: 2.0.0-rc1
os: 10.0.18362.1 (WinBuild.160101.0800)
PS file version: 7.0.0.0
HostName: ConsoleHost
BufferWidth: 145
BufferHeight: 9001

Steps to reproduce or exception report

1. run Set-PSReadLineOption -EditMode Vi -ViModeIndicator Cursor
2. type abc
3. press LeftArrow
4. press RightArrow. Note the cursor is not moved to the end of line, so type more characters subsequently will insert the characters before c.