It seems that copying and pasting links isn't working in the Rich Text editor anymore. To be more specific, if you copy a link that in Markdown is encoded as follows:
[Pre-release v2.13 is now available (Updated 03/12/2023)](https://discourse.joplinapp.org/t/pre-release-v2-13-is-now-available-updated-03-12-2023)
and then paste it somewhere else, only the text is actually copied:
Pre-release v2.13 is now available (Updated 03/12/2023)
with the URL itself being completely lost.
This happens both when using Ctrl+C/Ctrl+V and the context menu. The only way to actually copy links seems to be doing it in the Markdown mode.