Sidebar resize feature covers up scrollbar and glitches on fractional scaling

[chfoo]

What I'm trying to do: Look at the table of contents in the sidebar by using the scrollbar.
What I expected: The scrollbar can be used whenever I move the mouse over it.
What actually happens: Accidentally trigger the resize feature, starts dragging the previous chapter link, and it gets glitched in the resize state.

The steps can be reproduced by going to a Rust book and selecting a chapter in the middle of the book.

1. When I click down on the invisible resize area (by accident), the scrollbar jumps left to the mouse pointer to begin resizing the sidebar. (The mouse pointer goes from the left-right icon to the hand icon.)
2. Because I did not realize that I didn't actually click on the scrollbar, I drag the mouse up/down and Chrome starts dragging the link for the previous chapter. (Chrome shows me moving a gray box with the URL. When intentionally resizing the sidebar by moving the mouse left and right, this does not happen.)
3. I let go of the mouse button and Chrome stops dragging the link, but page doesn't realize I let go of the button and the sidebar is stuck on the resize state.
4. Because the sidebar still keeps following the mouse, clicking anywhere on the page will click on previous chapter link.

I'm using Ubuntu 20.04 with a Font Scaling Factor of 1.05 and the browser Chrome 85. This issue does not happen in Firefox because Firefox does not appear to use the desktop's scaling factor.

I'm wondering if would be possible to have a visible resize handle or the ability to disable the resize feature.