Finally I shutdown my machine yesterday and started it again
today and
the issue suddenly disappeared. And the warnings also
disappeared from
command line output when running IceCat from there. Only the
following
was logged:
JavaScript error:
jar:file:///gnu/store/rllrc55ygi4yhxnhq8v41ynl6mg5ak56-icecat-60.3.0-gnu1/lib/icecat/omni.ja!/components/XULStore.js,
line 65: Error: Can't find profile directory.
1557058011027 address@hidden
WARN
Please specify whether you want browser_style or not in your
browser_action options.
GLib-GIO-Message: 12:06:51.903: Using the 'memory' GSettings
backend.
Your settings will not be saved or shared with other
applications.