uBO incompatible with InFormEnter

[stanlane]

Read first: https://github.com/gorhill/uBlock/blob/master/CONTRIBUTING.md

Describe the issue

I cannot use the "Create" button in uBO's Element picker.

Screenshot in which the issue can be seen

Steps for anyone to reproduce the issue

1. Install the Firefox add-on InFormEnter
2. Restart Firefox as required by InFormEnter
3. Open any website, then open the Element picker in uBO and select any element. You'll notice that the "Create" button is disabled

Your settings

• Browser/version: Firefox ESR 38.8.0
• uBlock Origin version: 1.11.0
• InFormEnter: 0.76.1-signed.1-signed

Your filter lists

Default filter lists

Your custom filters (if any)

[stanlane]

@gorhill Thanks bro.