I am using a Mac with Big Sur (macOS Monterey Version 12.7), and my email is POP, using Thunderbird Version 115.3.0. My incoming messages are sorted in reverse order so that the latest message is listed first. I retrieve the message headers first then I either delete the message or download the contents of the message. The problem is that when I download the contents of the message Thunderbird does download the message BUT it highlights the message just downloaded and it jumps to the next message. This is very annoying because in order to read the contents of the message I have to go back one message and purposely select the message just downloaded. It did not do this previously.