@happygolucky no, it's worse on firefox, on top of randomly not deleting cookies, it corrupts firefox database with consequances ranging from history breaking, cooking not deleting, websites broken until you fixes your databases (yes! )and then you re on to fix your browser making cookies completely useless. I stopped reporting since chasing cookies corruption is time consuming and it makes me feel i m working q&a for sweetp when releases after releases problems remains.
To restore trust, devs needs to give a lot more informations on what's going on and what are the detailed actions they take to adress these issues rather than providing incremental non or partially working fixes with little to no informations
and most importantly do a lot more tests before releases because those problems appears after a while and can be difficult to trace and reproduce AND when problem happens, it's too late, your browser is already broken.
In the meantime i found a fix: disable cookie for firefox so it stops messing up your places database and destroy your browser, and let firefox handle cookie deletion and whitelisting.