Why don't we just turn off MOZ_BLOCK_PROFILE_DOWNGRADE?

Jacques Angevelle jacques.for64+TB at free.fr
Thu Jul 4 16:51:54 UTC 2019


>From user's point of view, I think downgrading is nearly mandatory. New
versions are often broking add-ons a user can consider essential for his
daily use and new dev. policy disabling number of add-ons is really hard
to accept. The alternative could be difficult to implement : warn before
installation about ALL disabled add-ons with the new version. Backing up
all the profile is a solution but I doubt users will do this before each
upgrade. The main repercussion should be that users will stop upgrading
TB and this is a real security hole.


Le 04/07/2019 à 09:30, Nomis101 🐝 a écrit :
> Am 04.07.19 um 02:59 schrieb Ben Bucksch:
>> Mark Banner wrote on 02.07.19 13:31:
>>> was once basically "downgrades are nice but not really supported" is
>>> now a definite "downgrades are not supported"
>> FWIW, downgrades have always works. I've moved between versions of
>> Firefox since decades. I've never ever had any notable corruption
>> (modulo very very rare bugs like bug 1530660 which were then fixed).
>> This is definitely new and very inconvenient for development, of which
>> testing (also with real data and old time-battered profiles) is an
>> integral part.
>> Ben
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> I see this exacly the same. I never found any problem while downgrading Thunderbird. The first real issue after downgrading I ever
> had was MOZ_BLOCK_PROFILE_DOWNGRADE. For a test I downgraded from TB 68 to 60 and even to 45.8, but could't see anything broken.
> For beta testing and regression finding you often have to downgrade, which is now very frustrating. And it also happens very often
> that a normal user is downgrading. I'm in a Mac user forum and a lot of support questions there are regarding downgrading to an older version
> of any given software (because of dislike the new UI, missing features in the new version or whataver reason). For my oppinionen
> MOZ_BLOCK_PROFILE_DOWNGRADE will give a lot of support questions an a lot of angry users. At least we should give the users a possibility
> to switch MOZ_BLOCK_PROFILE_DOWNGRADE off by there own risk and defenitely warn the user before launching the new version, that he
> would not be able to downgrade afterwards.

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