(url shortener v1.5.1) can't write the url in the section shorten many urls at once

PROJECT INFORMATION

repositories : https://github.com/dsc-dtu/falcon-android
issues : https://github.com/dsc-dtu/falcon-android/issues/57

ACTUAL BEHAVIOR

users should be able to write whatever link they want to shorten

EXPECTED BEHAVIOR

when I want to write a url that I want to shorten and after I finish writing, the url I wrote does not appear

STEP TO REPRODUCE

• instal and open the app
• scroll to the right side to the section where you can shorten many urls at once
• then write the url you want to shorten
• note the error

android: android 6.1 ,
keyboard : touchpal for oppo in indonesia lenguage
browser : url shortener v1.5.1

ERROR RECORDING