I have a composer form and when I render on any platform I can tab through the fields and then onto the form that's suppressed behind the modal. I can even change fields on the form. An example is the Save dialog. I can tab through the required fields and if I keep tabbing I'll hit the fields in the form and I'm able to change them as well.
My question is, has any one seen this and found a fix for it?
Yes, this is a known issue. I have an updated dialog implementation that I can make available to you that will resolve this and provide other usability/accessibility enhancements. Contact me for further details.
These updates will be ported into future versions of the Maguire template.