inspect your db for more clues where the problem may be
MariaDB [d56cb677eaab3383]> select name,current from tabSeries where name like'%STE%';
MariaDB [d56cb677eaab3383]> select name,naming_series from `tabStock Entry`;
Here’s an eg case Naming Series Current Value Is not Updating from naming series form - #5 by clarkej