Ionic-filter-bar overlap with ionic-content

[mobigaurav]

I am using ionic version 1 for my project. I needed to implement a search bar , which filter's content populated on screen. I used this plugin 'https://github.com/djett41/ionic-filter-bar'. I am using filter-bar inside ionic modal, problem is when filter bar is shown it's overlapping with ion-content and when user enter any text inside filter bar it's not visible to user. Any help would be useful. For my ion-content i have added class='has-header'. This issue is applicable only for iOS devices.