Do not use windowSoftInputMode=adjustPan, as the toolbar hides when input is active.

app/src/main/AndroidManifest.xml

@@ -121,7 +121,7 @@
             android:name="com.geeksville.mesh.MainActivity"
             android:label="@string/app_name"
             android:screenOrientation="portrait"
-            android:windowSoftInputMode="stateAlwaysHidden|adjustPan"
+            android:windowSoftInputMode="stateAlwaysHidden"
             android:theme="@style/AppTheme.NoActionBar">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />