Yes. A good idea. I was supposed to suggest it myself. The only difference is that I mean transferring the tab (or tabs) from the active workspace to another.
Thanks for your comments. But no worries, I switched to Brave, which has qwant on their list, after realising that this request has been on for quite a while and Opera did nothing about it.
Use a descriptive and relevant title for new threads.
Be clear and concise when describing the problem. Be specific and remember to include important details, such as the exact error message or address of the site you're having trouble with.