[Mozilla Enterprise] browser.migration.version

[Tiago Marques Delboni]

More info about the issue: if I revert the value of 
browser.migration.version from 66 to 22 the problem with the tabs 
reappears. Changing again from 22 to 66 make it go away but exhibits a 
page saying that there was a problem restoring pages from last session 
(bellow, in Portuguese):




*Tiago Marques Delboni*
Gerência de Aplicações e Suporte a Clientes / GTI
(31) 2108-7700

Assembleia Legislativa de Minas Gerais <http://www.almg.gov.br> 	 
Facebook da Assembleia <http://www.facebook.com/assembleiademinas> 
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Em 23/08/2019 13:49, Tiago Marques Delboni escreveu:
> Hi Mike
>
> No errors on the console and the value was not a string.
>
> *Tiago Marques Delboni*
>
> Em 23/08/2019 13:31, Mike Kaply escreveu:
>
>> I just tried changing my value to 22 and things still worked.
>>
>> Can you check and see if there was an error on the console?
>>
>> Mike Kaply
>>
>> On Fri, Aug 23, 2019 at 11:29 AM Mike Kaply <mkaply at mozilla.com 
>> <mailto:mkaply at mozilla.com>> wrote:
>>
>>     That is an internal preference that shouldn't be messed with (it
>>     should get set automatically)
>>
>>     The current version is actually 87 (It is not tied to the browser
>>     version).
>>
>>     And an old version should work fine (unless it was a string for
>>     some reason)?
>>
>>     Mike
>>
>>     On Fri, Aug 23, 2019 at 11:24 AM Tiago Marques Delboni
>>     <tiago.delboni at almg.gov.br <mailto:tiago.delboni at almg.gov.br>> wrote:
>>
>>         Hi all!
>>
>>         After upgrading from ESR 52.9 to ESR 60.8, some users
>>         reported that only the first tab opened in Firefox was
>>         working. They can open new tabs but cannot navigate on them.
>>
>>         I've found that the problem was with the property
>>         "browser.migration.version" set in
>>         "%appdata%\Mozilla\Firefox\Profiles\{userprofile}\prefs.js":
>>
>>         user_pref("browser.migration.version", 22);
>>
>>         Removing this line or setting the value to 66 fix the issue.
>>         So, how exactly does this property works? I couldn't find any
>>         information about this.
>>
>>         -- 
>>
>>         *Tiago Marques Delboni*
>>         Gerência de Aplicações e Suporte a Clientes / GTI
>>         (31) 2108-7700
>>
>>         Assembleia Legislativa de Minas Gerais
>>         <http://www.almg.gov.br> 		Facebook da Assembleia
>>         <http://www.facebook.com/assembleiademinas> Twitter da
>>         Assembleia <http://www.twitter.com/assembleiamg> Instagram da
>>         Assembleia <http://www.instagram.com/assembleiademinas>
>>         Youtube da Assembleia <http://www.youtube.com/assembleiamg/>
>>
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>
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