UserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:63.0) Gecko/20100101 Firefox/63.0

Steps to reproduce the problem:
1. Create enough content for a scroll-able page.
2. Create a html tag with css property/value 'position: sticky'
3. Create a select element inside the element that is 'sticky'.
4. Scroll down until the sticky element is sticky and then click on the select element.
5. The document will reset it's position to the top.

Example:
https://jsfiddle.net/JSDave/gja43x5p/

What is the expected behavior?
After clicking the document should not reset to the top of the document but stay where it was.

What went wrong?
Scroll position is changed after clicking a select element that is inside a 'sticky (css)' element.

Example:
https://jsfiddle.net/JSDave/gja43x5p/

Did this work before? N/A 

Does this work in other browsers? N/A

Chrome version: Version 70.0.3538.110 (Official Build) (64-bit)  Channel: stable
OS Version: 10.0
Flash Version: