[kmail2] [Bug 471276] New: Some newsletters format weirdly or do not load at all

[Serena Star]

https://bugs.kde.org/show_bug.cgi?id=471276

            Bug ID: 471276
           Summary: Some newsletters format weirdly or do not load at all
    Classification: Applications
           Product: kmail2
           Version: 5.23.2
          Platform: Archlinux
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: kdepim-bugs at kde.org
          Reporter: LionsSharks15 at gmail.com
  Target Milestone: ---

Created attachment 159794
  --> https://bugs.kde.org/attachment.cgi?id=159794&action=edit
Screenshot of NBC email selected but showing broken TLDR email instead

SUMMARY
***
Some email newsletters I receive such as ones from TLDR News and my local NBC
news station either format weirdly or do not load. TLDR News emails appear with
a white header (that includes Subject, From, To, and Date) that does not
respect system font. Local NBC emails do not load when selected and show the
previously viewed email instead.
***


STEPS TO REPRODUCE
1. Click email from TLDR or NBC
2. Loads with weird (fallback-like) formatting for TLDR; does not load at all
and shows previously selected email for NBC

OBSERVED RESULT
TLDR emails appear with a white background and Arial-looking font that seems to
be some kind of fallback. NBC emails do not load and show the previously
selected email instead. 

EXPECTED RESULT
Both emails should show all content with proper system theming.

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: Kernel - 6.3.8-arch1-1 (64-bit)
(available in About System)
KDE Plasma Version: 5.27.5
KDE Frameworks Version: 5.107.0
Qt Version: 5.15.10

ADDITIONAL INFORMATION

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