Every time I try to add a new note, the window to type the note briefly activates, but midway through typing my note it deactivates and greys out, deselecting both the note and the whole text thread it is part of. To continue typing the note, I need to click back into the text frame and use the arrows to get to the previous or next note to reactivate it. Then it deactivates again a second or two later. Why is it doing this? I am using 20.4.1 x64.