[kmail2] [Bug 416887] New: In multipart plain text/HTML messages the possibility to switch to HTML is not displayed

[Marco]

https://bugs.kde.org/show_bug.cgi?id=416887

            Bug ID: 416887
           Summary: In multipart plain text/HTML messages the possibility
                    to switch to HTML is not displayed
           Product: kmail2
           Version: 5.10.3
          Platform: openSUSE RPMs
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: kdepim-bugs at kde.org
          Reporter: marco at trunzerweb.de
  Target Milestone: ---

Created attachment 125504
  --> https://bugs.kde.org/attachment.cgi?id=125504&action=edit
The plain code of an example message

SUMMARY
In former versions (that from OpenSuSE Leap 15.0 or 42.0 for example) when I
received an email with both plain text and HTML the text was displayed, but at
the bottom there was a possibility to select the HTML.

Now I do not have the possibility to select HTML. As often the plain text does
not really contain the content, I cannot read the email anymore then.

OBSERVED RESULT
Only text content is displayed with no possibility to select HTML part.

EXPECTED RESULT
Possibility to select the HTML part

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION

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