Hello,

To reproduce the bug:

1. emacs -Q --eval "(require 'org-habit)"
2. Open the following org file:

---------------begin----------------------
* TODO foo
SCHEDULED: <2023-02-01 Wed .+2d/4d>
:PROPERTIES:
:STYLE:    habit
:CATEGORY: foo
:END:

* TODO bar
SCHEDULED: <2023-02-01 Wed>
------------- end ----------------------

3. M-x org-agenda, then press < a to create an agenda buffer
4. Go to the line containing foo, press <

Expected result: the agenda buffer shows only foo

Actual result:
org-agenda-filter-by-category: No category at point