Could you please terminate Cookie.app, launch firefox, go to about:config and create a new boolean pref with the name storage.multiProcessAccess.enabled set it to true. Then restart everything and let me know if things are better.
Bug 1649981 Comment 15 Edit History
Note: The actual edited comment in the bug view page will always show the original commenter’s name and original timestamp.
Could you please terminate Cookie.app, launch firefox, go to about:config and create a new boolean pref with the name storage.multiProcessAccess.enabled set it to true. Then restart everything (included Cookie.app) and let me know if things are better.