Uncaught error - Can't move a component made by channel components

[pkiourti]

Steps to reproduce:

1. Use the channel component to draw a custom component
2. The resulting component can only be selected as a whole
3. Selecting the move button in order to change its X, Y coordinates produces an error as seen in the console.

It looks like I cannot upload the json file of the component to reproduce the issue, but it can be verified easily even by drawing one straight line using the channel component.