Just reporting a bug:-
When editing text in the viewer in a composite shot, it intermittently will still have keyboards keys mapped to moving the text box around rather than moving in the text, even though the text tool is selected and the text box has focus. e.g. when trying to select a particular character in a text string on screen with the text tool selected and using the keyboard arrow keys, it instead will move the text box around as though the pointer tool is selected.
Have to switch tools a couple of times to initialise the selection. Have not been able to recreate exact scenario leading up to the bug.