https://bugs.winehq.org/show_bug.cgi?id=56930
--- Comment #2 from Raxelgrande lucasgenerates@gmail.com --- (In reply to Fabian Maurer from comment #1)
Using wine-9.12 on Arch, I can't reproduce the issue. Does the same issue appear in a clean WINEPREFIX with a fresh install of the program and a new empty project?
I tested with these steps and the program worked flawlessly. The problem looks related to the assets and unless it can get reproduced with Yume Nikki on more computers i would close the issue.