ias-weston is crashing when we try to move mouse pointer on numbered grid

[oidapala]

ias.conf

connect a mouse to the target
Restart weston
Load a plugin that sends received events from the plugin to the surface
move the mouse on that

observed ias-weston crash and below error
systemctl status ias-earlyapp.service
● ias-earlyapp.service - ias weston compositor
Loaded: loaded (/usr/lib/systemd/system/ias-earlyapp.service; enabled; vendor preset: disabled)
Drop-In: /etc/systemd/system/ias-earlyapp.service.d
└─override.conf
Active: failed (Result: exit-code) since Wed 2019-01-16 14:33:18 UTC; 12s ago
Process: 1414 ExecStart=/usr/bin/ias-weston-launch -- -i 0 (code=exited, status=16)
Main PID: 1414 (code=exited, status=16)

Jan 16 14:31:35 N20190111-27160 ias-weston-launch[1414]: [14:31:35.898] Failed to generate shader binary
Jan 16 14:32:02 N20190111-27160 ias-weston-launch[1414]: [14:32:02.752] IAS ERROR: Invalid id 0x0000564F275192E0, unable to find matching view
Jan 16 14:32:02 N20190111-27160 ias-weston-launch[1414]: [14:32:02.752] IAS ERROR: Trying to get focused events on invalid view 0x0000564F275192E0
Jan 16 14:32:02 N20190111-27160 ias-weston-launch[1414]: [14:32:02.752] IAS ERROR: Invalid id 0x0000564F275325B0, unable to find matching view
Jan 16 14:32:02 N20190111-27160 ias-weston-launch[1414]: [14:32:02.752] IAS ERROR: Trying to get focused events on invalid view 0x0000564F275325B0
Jan 16 14:32:02 N20190111-27160 ias-weston-launch[1414]: [14:32:02.752] IAS ERROR: Invalid id 0x0000564F275189D0, unable to find matching view
Jan 16 14:32:02 N20190111-27160 ias-weston-launch[1414]: [14:32:02.752] IAS ERROR: Trying to get focused events on invalid view 0x0000564F275189D0
Jan 16 14:33:17 N20190111-27160 ias-weston-launch[1414]: ias-weston: libweston/input.c:1460: weston_pointer_set_focus: Assertion `view || sx == wl_fixed_from_int(-1000000)' f>
Jan 16 14:33:18 N20190111-27160 systemd[1]: ias-earlyapp.service: Main process exited, code=exited, status=16/n/a
Jan 16 14:33:18 N20190111-27160 systemd[1]: ias-earlyapp.service: Failed with result 'exit-code'.

[satyeshwar]

Please attach your ias.conf and weston.ini. Also, provide exact commands that you typed to see the error.
It is a must have to provide exact steps to reproduce.