S3422DWG, vertical bar defect with flickering horizontal lines

Hello

Just bought a new Dell S3422DWG, but there's a noticeable vertical stripe composed of horizontal lines flickering in the middle of the screen. Doesn't show during BID. It's constant with DP, HDMI, with my desktop and another laptop. Tried changing some settings without success (refresh rate, HDR, Freensync and response times). It also has the latest firmware. What is causing this? An irreparable defect without workarounds?