Recent updates solved my issue. I can confirm that Chromium 119.0.6045.105-1~deb12u1 is no longer affected by a crash; the --incognito option works as intended. The last affected version that I did use was 117.0.5938.62-1~deb12u1. I did not test the 118 release. In brief, the bug is resolved. Thank you for your patience and attention. Bests regards.