Other indicators can stop search from working

[Sam Thomas]

If another indicator attaches a method to the GLib Mainloop with Idle.add (...) that never gets removed, search in slingshot no longer works. An example of this: https://github.com/sgpthomas/elementary-redshift/blob/839448cf5bc330516b621c1c30b1897ecfdd8e25/src/Services/RedshiftController.vala#L66.

[Sam Thomas (sgpthomas)]

Doesn't happen if you set the Idle priority to low. So using
Idle.add_full (Priority.LOW, some_func);