V2.11_17, Android 4.4.4 with Motorola XT1225 (Moto Maxx)
Method 1: As described by others: All Eap methods: connection lost at roaming, have to uninstall the App, delete and reconfigure network to get connected again;
Method 2:
EAP-Peap-MSChapv2: seems to work but doesn't reconnect seamlessly on roaming (takes aproxm. 30secs) and on lost connection (eg. elevator) the reconnect takes up to 3 minutes;
EAP-TLS: No connection, have to uninstall the App, delete and reconfigure network to get connected again;
Method 3:
EAP-Peap-MSChapv2: Cycling connect-authenticate-getting IP and again connect-authenticate-getting IP and again ...no end;
EAP-TLS seems to work almost well but on lost connection (eg. elevator) reconnect takes up to 2 minutes (multiple scanning and IP 0.0.0.0 till the connection is settled with the correct IP)
Nexus 5 and 9 roam fairly well with Android 5.0.1 so I didn't install.
Hope this helps a bit to further improve your app.
Kind regards
Peter