Steps to reproduce:
- Copy the URL https://moodle.org/ to your clipboard.
- Start writing a forum post.
- Type 'The forums at CRTL+V are a good place to get help with Moodle.'
Expected result: The editor should contain "The forums at https://moodle.org/ are a good place to get help with Moodle."
Actual result "The forums at are a good place to get help with Moodle.https://moodle.org/" because when you pasted, the text input point ended up at the start of where you pasted, not the end.
(I saw this in Firefox. Not sure if it is browser-dependent.)