1. "Title Text" is automatically selected, so it will vanish as soon as typing begins.
2. As you may know, an alternative to keystrokes for a snapshot, with resolution options, is to right-click in the preview window.
3. Paint removes a background from an image but doesn't make the BG transparent. WEB tools that can handle that - https://www.unscreen.com/upload
4. Have never seen that behavior in any release. Share the project that does it and someone will check it out.
This is a peer support forum - users. File suggestions with NCH. Click here.