Hello
I'm not aware much about Sencha App.
But If you hire me for this project, then I'll learn and fix this issue.
I'm professional programmer and having knowledge in C,C++,Java,Python,C#,GIT,SQL knowlege.
Also having good team with me for performing challenging tasks for client.
Let me have a chance to work with you. I'll don't make you unhappy sure.
Thanks,