[Blind-sysadmins] Microsoft Teams losing focus

Hi, Is anyone else finding they are losing focus in Microsoft Teams using JFW? I am getting it more often now where pressing tab in the Teams chat window gets no response, eventually I do land in a text box but as soon as I tab out of that it goes back to silence. I had this yesterday in the middle of an incident and had to do weird combinations using the mouse and copying and pasting chat messages to the clipboard which was no fun. Any suggestions? Thanks. Andrew.