This was the problem submitted in the Problem Report, but I agree @mmisol that rather than bespoke solutions we should simply enable all node interactions when the Preview State is turned off with the exception of showing the Geometry in the background preview.

I'm not quite sure I understood why we needed to add another UI element for the tooltip when we already have it. Like @mmisol says, it should be a matter of keeping the existing tooltip enabled even in the preview-off state.

Well, the existing tooltip element was part of the rectangle, and disabling the preview adds a border on top of the node with its bg color set to light blue, and that did not have the tooltip element, which I added. I don't know if there is a way to create a separate tooltip element and bind it to both the rectangle and border.
And as @Amoursol said in standup today that right now the existing solution takes care of all the scenarios, but in future if we get some more update related to preview state we should look into extending the node to handle all the events without needing an extra layer on top.

We can investigate these kind of issues in our Node Refresh work that is currently being explored by UX :)