**OS **Windows 7
Katalon Studio Version 5.2
## Steps to reproduce -
**1. In the script tab, write a while loop with 2 conditions
e.g. while(!abc && def)
2. go to Manual Tab, t****he not Operator (!) will not displayed but **the operator still appear in the script tab
4. **If I further add new action into it in the ****Manual Tab, **the not Operator will be removed in the script tab