I don’t see a scrollbar using the default theme:
Blue Topaz has a lot of settings, you could check in their settings. It could also be another plugin or CSS snippet causing the wrapping. Have a look here for some debug tips:
Troubleshooting Guide
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Troubleshoot Instructions
In order for us to fix a bug, we need reliable and consistent steps that cause the bug every time.
If something looks wrong:
Make sure you are using the latest Obsidian version and that your installer is up-to-date. The app and installer versions don’t need to match, but they shouldn’t be too far apart.
The installer…