@sdirix if it is easier for me to email the files, I can also do that!
Hi @avwchapman,
What was the cause of the experienced issues? This might help future readers of this thread.
Your custom handleChange is not called as it’s overwritten by {...otherProps} which also contains a handleChange. You can fix this by placing {...otherProps} as the first statement of MuiCheckbox, which makes sure that your explicitly set attributes can’t be overwritten by anything in the otherProps.