Hi @mateusz.mysliwiec and @kazurayam,
We’ve updated Smart Wait and Web keywords checking and waiting logic to improve test reliability. Please refer to this document for the changes before and after 10.3.0: Smart Wait in Katalon Studio version 10.3.0 vs Previous Versions
In addition, the default wait timeout has been reduced from 30s to 10s, and it can now be configured in Project Settings > Execution.
