When an analyst clicks a link in the description field of a call in Core, it will open the URL as a page in the ASM call's tab without the ability for the Analyst to get back to the main call. Clicking Back to Main does not return the analyst to the original call. To escape, the analyst either needs to close and re-open the call or right-click the opened page within the call tab and click "Back" (browser functionality).
It would be helpful to either provide ASM functionality to return to the main call or have links open in a new browser tab/window.