When testing some morph searches for a user in the German language forum, I found what I think/hope is a resource bug in The Lexham Syntactic Greek NT - SBL edition.
We were morph-searching for a consecutive pattern in Greek: περί, a female article, female noun, male article and then male noun (just curious off topic: this kind of searches looks to me like candidates for syntax search - anybody know how to create that?).
Lemma:περί BEFORE 0-1 WORDS @D??F BEFORE 0-1 WORDS @N??F BEFORE 0-1 WORDS @D??M BEFORE 0-1 WORDS @N??M
and Acts 19:8 is not found as a valid hit (unlike other morphologically tagged GNTs and the other hits in LSGNTSBL) at the location linked above.

The prior hit contains exactly the same sequence of words than the missing hit
as can be seen by looking only at a part of the search term:
I thought of increasing the #of words between περί and the first female article, but no luck. Something seems to break that search in the resource - hoping it's only a resource bug, not something in the algorithm.