Cannot clear flags
I usually use Thunderbird, because I find it has more options and add-ons and it's more reliable that Mac Mail, which I find very glitchy. However, I just bought an M1 MBP 16" and I now have Ventura, so I thought I'd try Mail again. So far so good, however, one semi-major glitch is that I'm unable to clear Flags. No matter how many times I try, no matter how many times I reboot, Holding the Option or Command or Control Key while pressing the Clear Flag button, I cannot clear the Flags.
MacBook Pro 16″, macOS 13.0