The this.omniNavigateTo() function triggers a page navigation event. When used inside an LWC embedded within an OmniScript, it often bubbles up and causes the entire OmniScript container to refresh or re-initialize, looking like a "reload."

Solution:

Instead of this.omniNavigateTo(), use the

1. If moving to the Next Step:

javascript
this.dispatchEvent(new CustomEvent('omninesxtstep'));

If updating data:

javascript
this.omniApplyCallResp({ "yourData": "value" });

Why it happens: omniNavigateTo is designed for PageReference navigation (like moving from Salesforce Page A to Salesforce Page B). When you call it, the framework assumes you are leaving the current context, so it reloads the component wrapper. Avoid using it for simple step transitions inside the same OmniScript. 

1. https://trailblazers.salesforce.com/profileView?u=0053A00000FTqkWQAT