[Sony Cross-Device Development Themes and Apps] iArvee:
Works great on XZ3! Thanks!

EDIT:

Launcher crashes when attempting to use multi-window (splitscreen) mode.

Logcat:

02-28 13:24:56.879 834 937 W SurfaceFlinger: Attempting to set client state on removed layer: Splash Screen com.android.launcher3#0
02-28 13:24:56.879 834 937 W SurfaceFlinger: Attempting to destroy on removed layer: Splash Screen com.android.launcher3#0
02-28 13:24:57.406 16171 16171 W launcher-loader: type=1400 audit(0.0:546): avc: denied { read } for name="u:object_r:semc_version_cust_active_prop:s0" dev="tmpfs" ino=21902 scontext=u:r:untrusted_app:s0:c39,c257,c512,c768 tcontext=u:object_r:semc_version_cust_active_prop:s0 tclass=file permissive=0 ppid=722 pcomm="main" pgid=16171 pgcomm="droid.launcher3"
02-28 13:24:57.437 16171 16171 I chatty : uid=10295(com.android.launcher3) identical 1 line
02-28 13:25:01.701 16171 16171 E AndroidRuntime: Process: com.android.launcher3, PID: 16171
02-28 13:25:01.703 1381 7072 D ActivityManager: New dropbox entry: com.android.launcher3, data_app_crash, 734bd5c2-7e2f-43c9-8014-5708a52320a2
02-28 13:25:01.704 1381 7072 W ActivityManager: Force finishing activity com.android.launcher3/com.sonymobile.launcher.XperiaLauncher
02-28 13:25:01.707 1381 7072 I ActivityManager: Clearing package preferred activities from com.android.launcher3
02-28 13:25:01.708 1381 1452 I ActivityManager: Showing crash dialog for package com.android.launcher3 u0
02-28 13:25:01.712 997 997 I JavaDumper:JavaDumperThread: addEvent: data_app_crash@1551378301711.txt processName: com.android.launcher3
02-28 13:25:01.728 1381 1452 I InputDispatcher: Focus entered window: Window{46885fa u0 Application Error: com.android.launcher3}
02-28 13:25:03.359 1381 7072 W ActivityManager: Force finishing activity com.android.launcher3/com.sonymobile.launcher.XperiaLauncher
02-28 13:25:03.368 1381 7072 I ActivityManager: Killing 16171:com.android.launcher3/u0a295 (adj 100): crash
02-28 13:25:03.370 803 803 E ANDR-IOP: IOP HAL: Received pkg_name = com.android.launcher3 pid = 0
02-28 13:25:03.376 1381 1381 V NotificationListeners: notification listener connection lost: ComponentInfo{com.android.launcher3/com.android.launcher3.notification.NotificationListener}
02-28 13:25:03.376 1381 1381 W NotificationListeners: notification listener binding died: ComponentInfo{com.android.launcher3/com.android.launcher3.notification.NotificationListener}
02-28 13:25:03.380 834 2427 W SurfaceFlinger: Attempting to destroy on removed layer: 9f29ca0 com.android.launcher3/com.sonymobile.launcher.XperiaLauncher#0
02-28 13:25:03.388 1908 1908 W OverviewProxyService: Binding died of 'ComponentInfo{com.android.launcher3/com.android.quickstep.TouchInteractionService}', try reconnecting
02-28 13:25:03.420 1908 1908 W OverviewProxyService: Null binding of 'ComponentInfo{com.android.launcher3/com.android.quickstep.TouchInteractionService}', try reconnecting
02-28 13:25:03.431 1381 1453 I ActivityManager: Start proc 16247:com.android.launcher3/u0a295 for service com.android.launcher3/com.android.quickstep.TouchInteractionService
02-28 13:25:03.436 1381 6344 D NotificationListeners: Removing active service ComponentInfo{com.android.launcher3/com.android.launcher3.notification.NotificationListener}
02-28 13:25:03.559 803 803 E ANDR-IOP: IOP HAL: Received pkg_name = com.android.launcher3 pid = 0
02-28 13:25:03.583 834 937 W SurfaceFlinger: Attempting to destroy on removed layer: 46885fa Application Error: com.android.launcher3#0
02-28 13:25:08.886 1381 2203 I ActivityManager: START u0 {act=android.intent.action.MAIN cat=[android.intent.category.HOME] flg=0x10010000 cmp=com.android.launcher3/com.sonymobile.launcher.XperiaLauncher} from uid 10295
02-28 13:25:08.888 803 803 E ANDR-IOP: IOP HAL: Received pkg_name = com.android.launcher3 pid = -1
02-28 13:25:08.896 16247 16247 W com.android.launcher3: type=1400 audit(0.0:547): avc: denied { read } for comm=45474C20496E6974 name="u:object_r:vendor_default_prop:s0" dev="tmpfs" ino=21945 scontext=u:r:untrusted_app:s0:c39,c257,c512,c768 tcontext=u:object_r:vendor_default_prop:s0 tclass=file permissive=0 ppid=722 pcomm="main" pgid=16247 pgcomm="droid.launcher3"
02-28 13:25:09.146 16247 16247 I chatty : uid=10295(com.android.launcher3) identical 1 line
02-28 13:25:09.756 16247 16247 W launcher-loader: type=1400 audit(0.0:548): avc: denied { read } for name="u:object_r:semc_version_cust_active_prop:s0" dev="tmpfs" ino=21902 scontext=u:r:untrusted_app:s0:c39,c257,c512,c768 tcontext=u:object_r:semc_version_cust_active_prop:s0 tclass=file permissive=0 ppid=722 pcomm="main" pgid=16247 pgcomm="droid.launcher3"