Issue Summary

On Microsoft Edge, when accessing the version history of a page, with enough versions to have a scrollbar, the "Highlight changes" button hovers over the bottom of the page, but when you scroll all the way to the oldest version, the "Highlight changes" button doesn't get pushed down, so the oldest version is clickable.
Changing the page's zoom (for 90%, or 110%) won't scale the elements accordingly.

Steps to Reproduce

1. Open a page with several versions, on Microsoft Edge
2. Open "Version history"
3. Scroll all the way to the oldest version (usually the V1)

Expected Results

The "Highlight changes" button fully "pushes" the V1 above it. The example below was in Google Chrome)

Actual Results

The "Highlight changes" button hovers over V1, but it's not clickable. The example below was in Microsoft Edge, with 90% zoom:

Keep in mind that both examples are scrolled all the way to the bottom.

Workaround

Access the page history on a different browser in order to access the V1.