Disable unwanted about:* pages

In Firefox 128, we got new unwanted about: pages, such as about:shoppingsidebar.

We should probably disable them.

added Sponsor 131 label

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mentioned in issue #42616 (closed)

also see #42113 (closed) remove about:telemetry

marked this issue as related to #42113 (closed)

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marked this issue as related to #42752 (closed)

mentioned in issue #42752 (closed)

marked this issue as related to #42831 (closed)

Do we just want to update/backport (uplift?) the mullvad-browser patch to base-browser?

/cc @donuts

assigned to @donuts

added Needs Information label

No objections to disabling about:shoppingsidebar from me, since it's broken in private windows anyway, and the intention seems to be to disable this feature's associated components in #42831 (closed).

@richard Do we just want to update/backport (uplift?) the mullvad-browser patch to base-browser?

Probably, but I don't know what exactly is included in this patch. I'd be happy to review if you can link me to the full list of about:* pages we disable in Mullvad Browser.

changed title from Disable new unwanted about pages in FF128 to *Disable unwanted about{+:+} pages

assigned to @morgan and unassigned @donuts

removed Needs Information label

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