Ionic App behaves differently in different browsers and devices


I am building an Ionic App and i have been testing the app on Google Chrome Canary and it was working perfectly fine as expected. Recently, i tried testing the app on Mozilla Firefox and the app was behaving a bit weird like some buttons weren’t working and the app was getting stucked. I ignored it considering that it might be an issue with Mozilla Firefox. Today, i installed the app on my device and to my surprise the app is behaving the same as it was behaving in Firefox. Some buttons aren’t working and also the app is getting stucked. I need to release the app for production, as early as possible and i am stucked with this weird issue.
Please help me out.