Motomo.php script not getting triggered in incignito

I have a self hosted matomo deployment on my own GCP kubernetes cluster. The deployed matomo instance is used for tracking 2 of our websites which works fine in the default browser setting. But whenever I try to use the webapps in incognito mode , the matomo dashboard doesn’t capture events. I checked the network tab and seems like matomo.php script doesn’t get triggered in incognito but it gets triggered every time an event is triggered in default mode.Has anyone faced a similar issue and find a solution?

Can you check there is no JavaScript error, no CSP errors, no HTTP error?
Also, please note that events occurring within an iframe cannot be tracked from the page hosting the iframe…