Currently I am trying to make a mask around text so I can reveal text to make it look as if it is being written by hand. I place the text down with the text tool, I then used the pen tool to trace the text. For some reason though, I can only place a few anchor points before a bounding box appears around the anchor points. I can no longer add anchor points to my current path.
If I use the pen tool to select my created path, I still cannot add more anchor paths. If I restart after effects I can sometimes place a few anchor points on the path then the bounding box reappears and I cannot place anymore.