Some times tabs are closing automatically really after opened, or going back to the blank page even after accessing any URL, without option to forward the address, same thing for closing tabs. So annoying this weird behavior. That without saying crashes on google search page, after search something its impossible to click over any link in the page, have to open the page in another tab to work properly. Safari was better in old version of macOS system (11). Thanks
<rdar://problem/88943523>
Thanks for filing, this sounds like a Safari issue rather than a WebKit one. Please file feedback with a timestamp of occurrence and a sysdiagnose at feedback.apple.com.