https://bugs.winehq.org/show_bug.cgi?id=52326
--- Comment #1 from eternalr.git@gmail.com --- Update: I think I found the cause. Installing one of the wine package's optional dependencies, the lib32-libxcomposite package, resolved the issue. Still, the fact that there was no error or warning about this in the terminal output or anywhere else is concerning, since someone else could run into the same issue in another context and be left without any clue for what to do - unless it's Arch being silly here and lib32-libxcomposite should be a required dependency, I guess.