The find utility of gracilla does not make the focus jump to the place where the item was found. It does put a box around the item if it is in plain text. So searching seems to work in this case. If the item happens to be in a table no box appears.
This is a bug (actually, an unimplemented feature) of the XmHTML widget, so you should file the report against that package. However, the widget has been long abandoned upstream... I once tried to implement the missing scrollto functionality, but haven't had time/inspiration to finish it. Probably I'll submit the patch anyway as is - it works, but with some quirks still. Regards, Evgeny