Hi ShadeEye, although it is not an ideal fix, we have found that deleting the save data once might resolve this issue. It can be found at
Users\(username)\AppData\LocalLow\Moyashi Tec lab\Voyeur Room509
The AppData folder might be hidden, so from the View dropdown, select show -> hidden items.
Please let us know if it works or not so that we can better understand the bug.