For some time, when you anchor a text box within a table cell or another text box and resize it, it does not appear to have a fixed point that it is resizing from so dragging from any point causes the anchored text box to jump up or move in an unexpected direction. Thus, to make a tiny tweak to the size of the anchored box requires a lot of effort (multiple nudges in various directions) to get it to where it should be instead of just one click and drag and it staying put as you resize.