Safari (18.3.1) crashes when I close a window (Sequoia 15.3.2 ) since last updates

Mac OS Sequoia (15.3.2) - Current March 2025

Safari 18.3.1 (no Extensions)

Mac Mini Pro M4

Safari has been crashing in frequently until the last update.

Since then, if crashes when I try to close an open window.

The only new software installed recently was Spotify (does not run in background).

I also installed Acrobat Reader and Drop Box, which I have used without incident for years.

My M2 Studio is identical and doesn't exhibit this problem.

I can't tell much from the crash report.