The message appears and then disappears immediately in production, but it works correctly in develop

[tomato20250]

Hi everyone,

I'm facing an issue where a server-side error message disappears almost instantly on the Production environment, while it stays visible on the Dev environment until manually closed.

Here is the UI Action code I'm using:

function runPullback() {
    var answer = confirm("Pull back confirm");

    if(answer) {
        gsftSubmit(null, g_form.getFormElement(), 'u_pullback');
    }
}

if (typeof window == 'undefined') {
    runPullbackServer();
}

function runPullbackServer() {
    gs.addErrorMessage("Pull back error");
    current.setAbortAction(true);

    action.setRedirectURL(current);
}

1. Issue: When running this in the Dev environment, after clicking "Pull back", the error message appears and stays visible until I manually close it. However, on Production, the message only flashes for a split second and then disappears (as shown in the attached image).
2. What I've checked: I have checked for g_form.clearMessages() in all related Client Scripts, but found no scripts that would clear the messages.
3. Question: Could you please let me know what might be causing this behavior?

Thank you all!