Wikipedia has some interesting lists, including this one of a more general list of unsolved problems across many fields: https://en.wikipedia.org/wiki/Lists_of_unsolved_problems
List of lists of lists of lists
I wonder how they were able to agree on a list of "Unsolved problems in philosophy". My best guess is they didn't involve philosophers in the creation of the list.
Aside: paraphrasing another answer, you can remove all of the straws from a bale, and you're left with a bale of zero straws.
It's turtles all the way down!
If I'm anti- anything, I am against those philosophers who refuse to make disprovable assertions and instead use rhetoric and non-formal logic to make their points.
The reason is simple, their stuff comes and goes. They contradict each other -- and often do not accept scientific fact simply because they do not understand it.
Philosophy was once the only way to investigate some particularly hard problems, such as "where do we come from?" or "what is the mind?". With recent scientific and technological advances, we actually got some fact-based answers there. Cosmology, standard model, evolutionary biology, neuroscience are evidence-based sciences that override, and often contradict, most philosophical speculations of the past. A lot of philosophers simply do not have the domain knowledge anymore.
I know that some argue that those sciences are philosophy, but, frankly, that's stretching reality.
Last point, my dislike for philosophers is not a "new" position. See what Richard Feynman had to say about them: https://www.youtube.com/watch?v=X8aWBcPVPMo