Chat app, samsung keyboard issue

Hi guys,
I need an advice with my chat application. I have a problem with samsung keyboard. Some testers point the issue with entering text, all of them use Samsung Galaxy devices so i guess this is related with samsung virtual keyboard.
Whats happens:
User enters two words to the textarea: ‘Hello World’ and submits. Next user enters some letter eg. ‘A’ and immediately gets ‘WordA’ instead ‘A’. It always repeats the last word from previous submit and adds that word to the next first entered letter.
When i did update samsung software few days ago, the problem has disappeared but i just can’t tell the users ‘please do android update before using my app’. Need to solve that problem somehow. Any idea how?

    @ionic/cli-utils  : 1.12.0
    ionic (Ionic CLI) : 3.12.0

global packages:

    cordova (Cordova CLI) : not installed

local packages:

    @ionic/app-scripts : 2.1.4
    Cordova Platforms  : android 6.2.3
    Ionic Framework    : ionic-angular 3.6.0


    Android SDK Tools : 25.2.5
    Node              : v6.9.2
    npm               : 5.3.0
    OS                : Windows 7