scalar events break after conforming scalar to new template

[struct blah float x float y]

[loadbang]
|
[drag 1(
|
| [transform rotate 0(
|/
[draw rect 0 0 40 40]

1. change the struct to [struct blah float x float y float r]
2. change the transform to [transform rotate r( and click the message box
3. click and drag on the black rectangle

Bug! Pd can no longer notify the drawing command about the drag event