Bug 443094

SUMMARY
In the Default Applications settings, there used to be a checkbox labeled "Open HTTP links in application based on MIME type" or something along those lines. This checkbox is no longer there since the page was remade at some point, so I assumed this was the default now, also considering this feature still works for a friend. However, as much as I try I can't get it to work again.

I made a patch[1] almost a year ago which basically forced this behavior on, which worked until a couple days ago but unfortunately does no longer for some reason, I haven't checked yet. (However, obviously that is a workaround.)

[1]: https://git.dblsaiko.net/sc/tree/portage/default/patches/kde-frameworks/kio/mimetypedetection.patch

STEPS TO REPRODUCE
1. Open link with file type that isn't HTML, e.g. a direct link to an image or a text file, through xdg-open, kioclient5 exec, or clicking on a link in an application

OBSERVED RESULT
The link opens in the browser, sometimes immediately prompting to download the file if it can't display the file

EXPECTED RESULT
The link opens in the text editor, image viewer, archiver, ... based on the associated application for that file type

SOFTWARE/OS VERSIONS
Operating System: Gentoo
KDE Plasma Version: 5.22.90
KDE Frameworks Version: 5.86.0
Qt Version: 5.15.2
Kernel Version: 5.14.8-gentoo-dist (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 5600X 6-Core Processor
Memory: 23.4 GiB of RAM
Graphics Processor: Radeon RX Vega

ADDITIONAL INFORMATION