Ctrl+K doesn't automatically paste urls when used with some non-standard urls.
Markdown text, such as [](https://data-flair.training/blogs/python-project-ideas/)
Screenshots

From what I managed to get my head around, when last part of main url has more than 4 characters, it's not considered URL.
Does it work, if you have some text selected? Or doesn't it also work with text selected?
It doesn't, behavior is similar to the first example:

Alright, would you mind to quickly have a look at the clipboard's contents so that I have all information for tackling this bug?
(Activate Debug mode in advanced settings, then menu -> Develop -> Inspect Clipboard)
It will help to know what the clipboard looks like as Zettlr looks at that when deciding what to do!

Thank you! I'll get into it!
I'm an idiot. Somehow I limited the Sub- and global domain name to max. 256 characters, and the top level domain to 2-4 characters. Don't ask me why I thought that'd be a good idea 馃し
No worries, did such stuff myself many times :D Thanks for the quick fix :)
Yeah, it's just that in the past three months due to increased activity I am forced to view and correct all the stupid decisions from 3 years ago increasingly often, hahahaha