Bugzilla

After Browser back/forward navigation, browser forgets the page scroll position.
It happens very often. Once the problem occurs, it will persist on that page.

This seems to happen on the specific page.

Steps to Reproduce:
1. Open https://www.wikipedia.org/
2. Open https://bookvilogger.com/rupin-zenigata in the same tab. 
3. Scroll and wait for page elements to load, if any.
4. Browser back navigation and then Browser forward navigation.
   --- Observe the scroll position
5. Repeat step 3 and step 4.

Actual Results:
Browser forgets the page scroll position.

Expected Results:
Browser should restore the page scroll position.

Regression window:
https://treeherder.mozilla.org/jobs?repo=autoland&searchStr=windows%2C2012%2Cx64%2Copt&tochange=7d32671931b7&fromchange=ab936b7f0c9f9e0b27e42e3f7909131bface08b9

After Browser back/forward navigation, browser would not remember the page scroll position.
It happens very often. Once the problem occurs, it will persist on that page.

This seems to happen on the specific page.

Steps to Reproduce:
1. Open https://www.wikipedia.org/
2. Open https://bookvilogger.com/rupin-zenigata in the same tab. 
3. Scroll and wait for page elements to load, if any.
4. Browser back navigation and then Browser forward navigation.
   --- Observe the scroll position
5. Repeat step 3 and step 4.

Actual Results:
 Browser would not remember the page scroll position.

Expected Results:
Browser should remember/restore the page scroll position.

Regression window:
https://treeherder.mozilla.org/jobs?repo=autoland&searchStr=windows%2C2012%2Cx64%2Copt&tochange=7d32671931b7&fromchange=ab936b7f0c9f9e0b27e42e3f7909131bface08b9