I have written a personal finance manager (which I call Newcash and which I will be releasing on github as soon as I finish the documentation). It is gtk+3-based and makes use of gtk's treeview to display the tree of accounts. This display normally has little arrows to the left of expandable accounts (those accounts in the tree with children). It works correctly on Arch Linux, Linux Mint, OpenBSD, FreeBSD and I may have forgotten something on which I've tested it. The arrows are missing when I run the application on a newly installed Void system. Clicking in the area of the missing arrows does expand the account, so that functionality works, but the lack of the display of those little icons is unacceptable. I suspect it's due to the font chosen by default, but that's pure speculation on my part. And anticipating a question, yes, I did completely rebuild my application having installed Void's gtk+3 and gtk+3-devel packages.

I really like some of the ideas behind void (particularly the non-use of systemd), but it feels like it's not quite ready for prime time. I realize that putting a Linux distribution together is a huge amount of work involving a gazillion details and so I'm not surprised that Void feels as if it's not quite there yet, given its relative youth.