Logical NOT Operator (!) Removed

**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

Hi Jason,

This issue will be fixed in our next release (5.4), please wait until there :). Thanks for your findings