Since upgrading to OS 10.15.5 Safari does not open correctly
I upgraded to Catalina 10.15.5 yesterday. Since doing so, when I click on the Safari icon the browser window no longer opens; I have to select 'File>New Window' to open a window. Also, when I click on any link in an email, nothing happens. I read some historic issues similar to this relating to 10.15.1 which suggest it may be an AV software issue, but I have that disabled and am still experiencing the problem. Anyone else had the same issue and found a solution?
MacBook Pro 15″, macOS 10.13