Changes

#* [https://bugzilla.mozilla.org/show_bug.cgi?id=802699#c2 Brian Smith on why this is insecure]: "It is OK to test out setting security.enable_md5_signatures = false.However, if this "solves" the problem, it means that the server is using an certificate that is not secure, and for security reasons the certificate needs to be replaced. We should make sure we advise users about this when we ask them to test out the security.enable_md5_signatures setting."

# {{Bug|790475}}. [[https://getsatisfaction.com/mozilla_messaging/topics/thunderbird_16_message_madness_spell_checker_on_steroids Canonical GS Topic]] - Spell checking broken if you backspace when using HTML email and a font like "Helvetica, Arial" - '''Workaround''': switch to "Variable Width"- broken in both FF 16 and TB 16 - Steps to Reproduce: 1) Open a new email message. 2) Type 'In the middle of the day' 3) Backspace until you only have 'In the mi' 4) Then retype the rest so you end up with 'In the middle of the day' again.

==== Add-ons ====

The following is an '''incomplete''' list of add-ons that have issues in Thunderbird 16. Please add to this list add-ons that have issues and if you find an add-on has been updated and works with Thunderbird, please strike it out using <del></del>