Hey there, the moment I updated my macOS to Big Sur Beta, Safari crashes. I mean, immediately, no chance on clicking on preferences and figure something out. The issue is different from other users here that have the same issue with Safari crashing after updating macOS. removing Library/Preferences or /Caches doesn't help installing Xcode 12 doesn't help it has noting to do with the CoreSimulator offending alias starting Safari from safe mode doesn't help either starting Safari with no extensions via Terminal doesn't help same issue for a new test account created on my Mac - crashes immediately copying a link/clicking on a link results in an immediate crash as well Safari does work however for a Guest account that is only able to browse the web even reinstalling OS from macOS Recovery doesn't solve the issue Honestly, I've tried everything I could think of. Kindly asking for help Crash log: Process: Safari [7240] Path: /Applications/Safari.app/Contents/MacOS/Safari Identifier: com.apple.Safari Version: 14.0 (16610.1.21.1.2) Build Info: WebBrowser-7610001021001002~4 Code Type: X86-64 (Native) Parent Process: ??? [1] Responsible: Safari [7240] User ID: 501 Date/Time: 2020-07-31 14:37:57.855 +0200 OS Version: Mac OS X 10.16 (20A5323l) Report Version: 12 Bridge OS Version: 5.0 (18P50335d) System Integrity Protection: enabled Crashed Thread: 0 Dispatch queue: com.apple.main-thread Exception Type: EXCBADINSTRUCTION (SIGILL) Exception Codes: 0x0000000000000001, 0x0000000000000000 Exception Note: EXCCORPSENOTIFY Termination Signal: Illegal instruction: 4 Termination Reason: Namespace SIGNAL, Code 0x4 Terminating Process: exc handler [7240] Application Specific Information: Crashing on exception: The window has been marked as needing another Layout Window pass, but it has already had more Layout Window passes than there are views in the window. <BrowserWindow: 0x7fe81c65d840> 0x84c (2124) {{88, 69}, {1264, 806}} Start Page en_GB