Is This Possible?

[Sheap]

This seems to make not much sense; dragon human forms are BETTER than their dragon forms at magic, which is the determining factor for site searching.

So if this is happening it is a bug.

To prove it:
Make a new game and save the original turnfile (i.e. first turn).

Go site-search in human form. Save every turn as you do this.

Then go back and site-search in dragon form too. Save every turn until you find a site that wasnt found in human form.

Then zip up the whole mess of turns and send it to illwinter.

By this point you will have either provided IW enough information to find and fix the bug, or else convinced yourself it doesn't actually exist.