fillField method is not working when passed specific value

I am trying to enter values in textboxes on web application using I.fillField and I am passing "Delete" as value
e.g. I.fillField(xpath of the textbox,"Delete");

Value "Delete" is not getting entered in textbox when 'D' is capital however if we pass 'd' i.e. "delete" as value from script then it works.

When I pass I.fillField(xpath,"Delete") this step shown as executed in debug logs but actually action does not executes on UI.

### Details

* CodeceptJS version: 3.0.2
* NodeJS Version:12.16.3
* Operating System:Windows 10
* webdriverio
* Configuration file:

```js
# paste config here
```