[orca-list] finding text on a web page

["Rob Hudson" <rob_hudson3182 opopanax net>]

Eitehr I'm doing something wrong, or orca's screen reader find is broken in browse mode.
Orca 40.01, firefox 91.0.2-1 running via ratpoison 1.4.9-3
Test web page: https://www.wunderground.com/forecast/us/mn/moorhead/56560
If I press insert+delete, the find dialog pops up. I type in something like
9/10
I expect orca to bring me to that link. But nothing happens. I don't hear, not found,, or anything at all 
after typing the string and pressing enter.
If I use the web browser's own find dialog via control+f, it kind of works, but it's a little slow.
What's happening here?