draw ignores textSize

See the example at https://www.khanacademy.org/computer-programming/wat7/4733593008340992 . A call to `textSize` is ignored. All is copacetic if the same code is _not_ invoked via the `draw` function.

Start by reproducing the behavior in the linked Khan Academy example, comparing the code path that uses draw with the path that does not. Trace the draw and textSize entry points to find where the text size is lost, then verify that textSize affects rendered text when called through draw.

Written by the indexing model from the issue text.