(In reply to Magnus Melin [:mkmelin] from comment #3) > Do you do anything special? Will need more details. Not that I'm aware of. This is an en-us Thunderbird version, and both, the English, and German dictionaries are installed, and enabled for spell check. The problem is seen when sending an OpenPGP encrypted message from a Yahoo account. The problem is also seen when sending an OpenPGP encrypted message from an AOL account. The problem is not seen when sending an encrypted message from a Gmail account.
Bug 1899724 Comment 4 Edit History
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(In reply to Magnus Melin [:mkmelin] from comment #3) > Do you do anything special? Will need more details. Not that I'm aware of. This is an en-us Thunderbird version, and both, the English, and German dictionaries are installed, and enabled for spell check. The problem is seen when sending an OpenPGP encrypted message from a Yahoo account. The problem is also seen when sending an OpenPGP encrypted message from an AOL account. The problem is not seen when sending an encrypted message from a Gmail account. When sending an OpenPGP encrypted message from a Yahoo account using TB 115.11.1 there is no problem with umlauts.