Clicking a link in newsbeuter (from konsole) or in claws-mail opens it in Chromium after a very long


I am experiencing this issue using KDE Plasma desktop: When I click a link from a mail message in claws-mail or from a news article in newsbeuter it opens after 20-30 seconds (or more) in the default browser (Chromium).

I reported that as a bug but it was closed as WORKSFORME, so I guess it is something in my system only. Unfortunately I don’t know what it may be.

Has anyone any idea how to fix this?