Brilliant idea, I also vote for this feature.
If you have AutoHotkey, you can use the following script as a workaround. It
will synchronize every time you move the cursor up or down.
#IfWinActive ahk_class TfPSPad
Up::
Send {Up}
PostMessage, 0x201, 9,40, TToolBar1, ahk_class TfPSPad
PostMessage, 0x202, 9,40, TToolBar1, ahk_class TfPSPad
return
Down::
Send {Down}
PostMessage, 0x201, 9,40, TToolBar1, ahk_class TfPSPad
PostMessage, 0x202, 9,40, TToolBar1, ahk_class TfPSPad
return
#IfWinActive
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