Hi all, I have a weird issue with Thunderbird 89.0b4 on MacOS 11.1. When clicking reply all to an email I received, where I was in cc with another 15 people, the "send" button is ghosted, and I cannot send the email. The button becomes active again if I remove from the "to" list one or more people until the list gets shorter than 15 people or so. Interestingly, the button stays active if I then add the same addresses back. This only seems to happen when the people are in the to field. I do not see a similar behavior when they are in the "cc" list. Is this just a temporary issue due to the beta nature of the version I'm using, or something I'm missing? thanks salvo