This task is split out from T304568#7856435.
On that note, see also the question at https://phabricator.wikimedia.org/T304568#7854636. We're thinking the Reload buttons should be hidden/disabled while loading is taking place, so that they don't appear clickable when they don't do anything.
Agree with the above.
In addition let's make the whole gray area clickable, including the area outside of the button in this screenshot:
This should help us to mitigate @DLynch's concerns, so if folks are confused the whole area is clickable and hopefully there's enough context where they understand it's not a reload of the whole page:
As a complete drive-by comment, I'd be worried about confusion over whether "reload" means to reload the entire page, and that causing user worries about data-loss.
Other thoughts:
The blue button text should stay blue, but no longer be a button. The focus, cursor, tooltip, accesskey, etc. should all be moved to be on the whole bar.
The bar should be disabled and (as it currently is) be dimmed during preview-loading.
