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<p>Worth considering. However, while the option exists, if it's not
used in Firefox then there's no knowing if/when/what disabling it
will break...</p>
<p>The feature was created on the premise that internal data storage
(db such) doesn't work well with downgrading, when the database
structure changed. Since there is no backward compat promise of
any sort, but rather the opposite, I'm also concerned downgrade
attempts would increasingly mess up your profile data. </p>
<p>Open to other ideas for solution if opening the Profile Manager
is difficult. Maybe it's enough to add a link to a support
article.<br>
</p>
<p> -Magnus<br>
</p>
<div class="moz-cite-prefix">On 02-07-2019 06:16, Geoff Lankow
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:7ed1e7f5-2f2a-9b01-87d0-0fdfa14e015b@thunderbird.net">
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<p>(That's the "You’ve launched an older version of Firefox"
dialog.)<br>
</p>
<p>In <a moz-do-not-send="true"
href="https://bugzilla.mozilla.org/show_bug.cgi?id=1535116">bug
1535116</a> we've proposed to change the text in the dialog to
better suit Thunderbird. That's easy enough.</p>
<p>Magnus also wants me to change the "Create New Profile" to
instead open the Profile Manager. That's not as easy as it
sounds. The proper way to do it is through nsAppRunner.cpp.
We're in a pre-startup state (although we do have XPCOM).
Technically we <i>could</i> show the Profile Manager window and
mimic the expected results, but I'm not comfortable with that.</p>
<p>I digress. My point is: why do we have this thing at all? Is
there a good reason we want to go to these lengths, other than
Downgrading Is A Bad Idea™? It can be removed with <a
moz-do-not-send="true"
href="https://searchfox.org/comm-central/rev/679db3c87c1a356a66433d6c2adf6fca1f20789f/mail/moz.configure#75">a
one line config change</a>.</p>
<p>GL</p>
<br>
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