funny: dictation seems to cut off my first few words on the iPhone 16 Pro

Hello friends, I hope everyone is well. iPhone 16 Pro owners, I'd like to hear your opinions and experiences. Using the stable version of iOS 18.5, I notice that I can't start speaking immediately after starting dictation, or the first words I say, including punctuation, aren't recorded. I still have my old iPhone 11 Pro Max, which is the same version as the S, but I don't have this problem here; I can start speaking immediately after hearing the dictation beep. Is this normal? Is there anything I can do to fix it? I look forward to your responses and I'm immensely grateful for your help.