It looks like there have been some significant changes in the way Web Clipper interacts with browsers and it looks like, for many users, this has made it unusable. Apparently, now it only works if all cookies are allowed, which is unacceptable.

I can't imagine how this change was necessary. It looks like yet another case of developers feeling the need to endlessly/pointlessly tinker with a perfectly good product.

In the meantime, I've downgraded to a previous version, but my keyboard shortcut no longer works with it.