Xcode rebuild doesn't reflects changes

Hi, I’m trying to build in xCode… it’s really frustrating the fact any css, html, js changes it doesn’t take effect when I rebuild the project.
I notice after several (I mean 10-15 times) rebuilds/Xcode restarts I see some edits. Obviously I cannot work in this conditions.
Is that a known xCode/Ionic issue?
How can I solve?