@nomadMik Hello. I appreciate your interest and support. Unfortunately, can't change the way Opera sidebar works. Open any app from the sidebar in a separate tab.
I have an idea how to do what you're talking about, but there might be some difficulty with the markup of the inner element. At the moment, it displays buttons and I'll have to tinker with it to add a paragraph structure. Accordingly, it will be necessary to make changes to a JSON structure and the processing JS. This is not a five minute job. But I want to assure you that I carefully consider all requests and comments.
I have been developing this project for about two years, during which time 17 versions were made. As of today, Synballo is under CC BY-ND. This license was chosen based on the development plan in one of the latest versions. Back then I asked my followers what they think about open-source (see here https://twitter.com/coder2code/status/1481018396175224834) but since no one ever responded I decided to keep the license. The number of users is growing and this brings us closer than anything else to further development.
Best regards.