Problem with Katalon Studio version 5.4.1 - Finding an iframe element

Hi, I created a test case on Katalon Studio version 5.4 and it ran correctly, finding and getting iframe elements. But when I updated the Katalon Studio for version 5.4.1 and openned the same test project, it started to give problem to find iframe element. So when I try to use a “TEXT SET” into the frame field, error occurs, because the element is not found.

I tested again on Katalon Studio version 5.4 and it ran correctly.

Has anyone had this problem?

#Windows 10
#Chrome Version 65.0.3325.181 64 bits

Can you provide some execution logs in this case?