ATEM mini PRO split screen during recording

Hi all.
Did a webinar yesterday for about an hour. The setup was that I recorded on the usb drive and streamed via hdmi. In the middle of the webinar the output screen got slightly (1/5 of the screen) moved to the side, such as it did a sliding transition, but got stuck, throughout the rest of the Webinar. This did also affect the recording. I tried to do a couple of different transitions and I could not see any other issues. After the webinar I power recycled the device and it went back to “normal”. Has any other had the sam issue?