Something wrong with <> Source button ?

I have bad experience with "<>Source" button when editing message. [\..] tag is mouved at the end of the message.
Exemple :
1. add URL link in the middle of the message
2 clic "<>Source" 2 times
The last part of the message is embed into the link tags

Yup, it does that so a lot of copy/paste action is required.

It's any time you edit a message, the editor moves all the tags to the end.

It's horrible, and the "source" button is the only way to rescue a post.