Steps to reproduce the issue

install Joomla 4.0.0 beta 1 with no sample data
login to admin as super admin
attempt to create new module
Go to Menu Assignment tab
Select "only on the pages selected"
Note the yellow warning "No Matching Results"

Expected result

Actual result

unclear yellow warning "No Matching Results" - not sure WHAT results it was looking for as all I have done is open this panel so far.

The warning should be hidden by default.

Additional comments

It looks related to the sieve filter search - because if you search for crap you are left with the yellow warning, and if you then search for Home (a valid menu item name) the yellow warning is not there.