Text box in Team Chat inaccessible

Hi There. During the last couple of weeks I have been unable to access the text box when starting a new chat. I click on "New Chat" and I can enter a name and a topic, but the text box at the bottom has shifted to the left behind the list of colleagues. I can just see the very edge of the send button. I doesn't matter how large or small I make the window, it is still tucked back there. I have attached a photo. I am using the Zoom app on my mac. Any thoughts?