Unusual Wi-Fi disconnect and hard connect retry

I am observing a strange w-fi issue, since I flashed my TP-LINK C6Uv1. My DELL laptop is connected to the Wi-Fi over 5GHz (also using corporate VPN) and at random time, it just gets disconnected. It cannot reconnect, even after network forget. But once I connect to the Wi-Fi with my phone or other device, my laptop automatically gets connected back. This issue was on OpenWRT 23.05.0 and now it is the same on OpenWRT 23.05.02.