Firefox Floating Dropdown Items Not Accessible

[deeplyfriedchicken]

Bug Report

Steps

1. Open up Firefox - 60.6.0esr (64-bit)
2. Go to https://react.semantic-ui.com/modules/dropdown/#types-floating
3. Click on the arrow of the floating button example
4. Hover over any elements on floated dropdown

My coworker pointer out that none of the elements are clickable on the dropdown on Firefox. I apologize I don't have screen shots, but essentially the cursor doesn't change to the pointer like it should, and you cannot interact with those elements including click and hover.

Expected Result

Be able to interact with the dropdown items

Actual Result

Cannot interact with any of the elements in the dropdown. Clicking only closes the dropdown list without actually clicking on an item.

Version

0.86.0

Testcase

https://react.semantic-ui.com/modules/dropdown/#types-floating

[welcome]

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[layershifter]

PR is ready, it's not issue with component, so you can just pick up these changes.
Thanks for the report 👍