[Evolution] Opening a link in Evolution opens in Firefox despite my default app being set to Chrome

[KiwiHeretic <kiwiheretic myself com>]

Hi,

I am running Kubuntu 18.04.  Whenever I click on a link in an email it
opens in FireFox.

Here is the contents of my mimeapps file:

$ cat ~/.config/mimeapps.list
[Added Associations]
application/xhtml+xml=org.kde.kate.desktop;chromium-
browser.desktop;libreoffice-
writer.desktop;okularApplication_txt.desktop;bluefish.desktop;firefox.d
esktop;gedit_gedit.desktop;vim.desktop;gvim.desktop;
text/x-twig=bluefish.desktop;
video/webm=mpv.desktop;vlc.desktop;firefox.desktop;

[Default Applications]
application/xhtml+xml=org.kde.kate.desktop;
text/html=chromium-browser.desktop
text/x-twig=bluefish.desktop;
video/webm=mpv.desktop;
$

Thanks in advance