Hoping the extension is still supported. Starting from about 2 months ago roughly, I believe the new Chrome update broke the extension. Whenever I would open a new link from the bookmarks toolbar (using the middle mouse button) but ONLY after not opening anything for about a minute, the first new tab would always go all the way right. Then on the second click, it would go back to normal and open to the right.
It only happens when no new tabs have been opened for a minute, easiest way to test is just to not touch anything, leave the browser running, then after a minute use the scroll wheel (middle mouse button) to open a new link from the bookmarks toolbar.
It opens all the way on the right, but then you can click the exact same link again and it would open to the right as it is suppose to.
The weird part is, you can then keep opening links from the toolbar normally for about 30 seconds, but the moment you don't touch the browser for a minute, it is like the extension "goes to sleep" and needs to wake up again. I should also mention this only happens with the bookmarks toolbar, normal links from a site seem to act as they should.