lockScalingY=false/lockScalingX=false not working when fabric.Textbox doesn't packaged

[mikab]

Version

3.2.0

Test Case

https://jsfiddle.net/mikabpeng/e9s3tdqo

Information about environment

Chrome 74.0.3729.169

Steps to reproduce

Use a custom build fabric.js exclude fabric.Textbox class
Create a fabric.Rect and set lockScalingY= false, lockScalingX= false
Click the rect to make the rect selected
drag the middle or center control point to zoom the rect

Expected Behavior

The rect zoomed as dragging

Actual Behavior

The rect didn't zoom as dragging. A javascript exception thrown in the background:fabric.3.2.0_without_textbox.js:9685 Uncaught TypeError: Right-hand side of 'instanceof' is not an object

[asturur]

right.... this should be fixed.
Need to check that the class has been imported/added to the build.