the issue has gone after the computer reboot

Edit glad to see the problem is resolved.

I presume you have seen

• Troubleshoot Firefox crashes (closing or quitting unexpectedly)

You posted

• report for crashID https://crash-stats.mozilla.com/report/index/052f7adb-bc57-4e29-aa4a-376ab2120816
• Crash Signature: nsRefPtr<nsIDOMEventListener>::~nsRefPtr<nsIDOMEventListener>() | nsHTMLElement::Clone(nsINodeInfo*, nsINode**)

I can not say that helps me personally, but maybe someone else will find it useful. Meanwhile could I suggest you please post another couple of recent Crash IDs and could you try and obtain ones from a Firefox safe mode crash with no plugins enabled. (Safe mode disables extensions but not plugins)

John99, thank you for the reply.

I must say this is not the 1st time I got the crashes. Last time they've gone after cleaning up something in my user's profile (sorry, I don't remember exactly what I did to resolve it).

Here are the others IDs: bp-ac16edbe-f35c-4da6-b67d-563472120608 bp-3e8352e5-5846-4586-bee6-a78892120608 bp-9d4ff7be-2694-4dfb-b3c4-a87b52120608 bp-440f7ca0-588e-48b4-b9a5-7161c2120608 bp-e1a1b89a-1c17-440f-9d20-6656c2120608 bp-87bdc0ac-14df-4a11-9b10-e4d8e2120608 bp-c43c3aec-d8fb-42b4-8ce2-a08fd2120608 bp-933aff78-a035-467c-9656-a54f02120608 bp-3132c5e4-e96a-491f-82b2-59e1c2120619 bp-d85a885c-fefe-4eac-8357-64c422120619 bp-c0e14d0c-b5d3-47ea-8eb0-02d4d2120629 bp-c0a26c1f-f9d0-48a4-be9e-a4c442120629 bp-a36ab267-b3e7-47fb-89a4-626d62120629 bp-d01aa533-bccf-499a-b865-b04652120629 bp-8cf15f8c-597a-440a-a7b5-7f29a2120629 bp-2f3f4798-9775-45d9-bb54-122c02120702 bp-be03f19e-217d-466c-84ad-e1fba2120713 bp-10718cdb-bc27-4144-95a5-5930f2120713 bp-55eda796-2dee-4b32-9a66-9c0202120816 bp-74c0cd3e-a9e4-4082-a87b-a84172120816 bp-ef69ac9b-0545-43aa-b11e-b2b6c2120816 bp-15b10722-0611-419b-9502-8544a2120816 bp-3a4a9142-f30c-42bc-8157-aa6352120816 bp-6a5fa6ae-612c-418f-812a-063832120816

The earliest is the 1st.