[kmail2] [Bug 367997] New: regression: clicking on HTML Side Bar can no longer toggle html/plain text

[Martin Koller via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=367997

            Bug ID: 367997
           Summary: regression: clicking on HTML Side Bar can no longer
                    toggle html/plain text
           Product: kmail2
           Version: unspecified
          Platform: Other
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: UI
          Assignee: kdepim-bugs at kde.org
          Reporter: kollix at aon.at

In kmail2/KDE4 I could click on the left HTML Side Bar in the message viewer to
toggle between plain-text and HTML display of a mail which had both body parts
available.

kmail 5.3.0 now still shows in the tooltip that "toggle" shall be possible, but
I can only switch from plain-text to HTML but not back.

The mail I'm seeing has
Content-Type: multipart/alternative;

First part is
Content-Type: text/plain; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

next part is
Content-Type: text/html; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable


Reproducible: Always

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