[kmail2] [Bug 369572] New: Regression kMail 5.3.1 QtWebEngine: HTML mail printing not possible if plain text view is preferred over HTML

[Gunter Ohrner via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=369572

            Bug ID: 369572
           Summary: Regression kMail 5.3.1 QtWebEngine: HTML mail printing
                    not possible if plain text view is preferred over HTML
           Product: kmail2
           Version: 5.3.1
          Platform: Neon Packages
                OS: Linux
            Status: UNCONFIRMED
          Severity: major
          Priority: NOR
         Component: general
          Assignee: kdepim-bugs at kde.org
          Reporter: kdebugs at CustomCDROM.de

I configured my kMail to prefer plain text content over HTML.

Since upgrading to a QtWebEngine based version, it's impossible to print HTML
mails. This is a major issue, as nowadays most mails are only readable and
printable if HTML is enabled.

1) I click the mail, which will be shown in plain text view.
2) I enable HTML rendering by clicking the corresponding link in the mail's
header.
3) I enable loading of external references / images, if required.
4) I chose "print mail". A dialog pops up which informs me that QtWebEngine
does not yet support printing and an external browser will be used.
5) I chose "Open in Browser" and the external browser will open, *showing the
mail's plain text contents*... (With no way to switch on HTML rendering, of
course...)

Expected:

The external browser shoul show the mail the way it's currently displayed in
the mail view at the time the print command was invoked.

Reproducible: Always

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