There is a bug in Rank Math SEO.
I added a word to the URL to the focus keyword, but I see an “X” in “Focus Keyword not found in the URL.”
I am a Korean user.
The title, URL, focus keyword, and content of the page all contain the Korean word “???19”.
First situation.
(1) Enter “???19-??-??-??-??” in Permalink.
(2) Empty the focus keyword completely.
(3) Write “???19” in the focus keyword.
(4) “X” is displayed in “Focus Keyword not found in the URL.”
(5) RankMath score is 77 points.
Second situation.
(1) Write “???19” in the focus keyword.
(1) Empty Permalink.
(2) Write “???19-??-??-??-??” in Permalink.
(3) “Focus Keyword not found in the URL.” Displays “Check”.
(4) RankMath score is 86 points.
(5) Save changes. The score is still 86.
(6) Press Edit again.
(7) “X” appears on “Focus Keyword not found in the URL.”
(8) RankMath score changed from 86 points to 77 points.
The third situation
When editing the focus keyword and Permalink, the “Focus Keyword not found in the URL.” May occasionally show an “X” or “Check”.
Obviously, RankMath score is displayed normally when you click “Permalink” after accessing “Preview Snippet Editor”.
