Can't see any shader nodes on opening any shader

Hi All,

I just noticed that I can't see the contents / nodes of any SF shader anymore when I open them.
There's no error message in the console for any of the shaders I tried to open.
It seems to be a display issue as I can see the shader preview on the left hand side and the compile progress bar behaves as normal / turns green.
I tried clicking/dragging with the mouse, but I can't seem to scroll anything into the view.
If I try to add a new node, it doesn't show up either.

When I create a new shader (a PBR for example), that displays correctly in the editor.
When I save it and re-open it, I can see no contents (see attached screenshot).

I updated SF to the latest 1.17 to fix the issue, but nothing happened.
Then I deleted the SF folder completely and imported it from the asset store again. No change.

Can someone please advise me on what to do?

Thank you!