Since updating to Version 0.99.130.2-beta (WebKit 621.1.2.111.4) I see regular crashes when opening links in a new tab. I'd say it crashes at least 25% of the time when Command-Clicking on a link, and perhaps a bit less than that when choosing "Open Link in New Tab" from the contextual menu.
Sample crash log
Ideally, it wouldn't crash.
Version 0.99.130.2-beta (WebKit 621.1.2.111.4)
Sonoma (14)