Comment 1 for bug 1615398

The cause is that winpanel detects that the indicator is updated and tries to reload it. But GMODULE modules can not be unloaded if made resident (which is needed). So wingpanel detects the deletion and deregister the indicator. And then detects the new created file and tries to load it. But the past module is still present.
So this leads propably to the segfault.
Not to monitor the directory would lead to e.g. not removing the indicator when you purge it.