There was a recent update for the game. Although you have already narrowed and bisected the issue, have you tried seeing if the issue still persists with the update?
I'll take a look soon.
Noting that i am not reproducing the issue in the trace on a RTX 4080. This is also with the configs AMD-yfied DXVK_CONFIG="d3d9.useD32forD24 = True; d3d9.floatEmulation = Strict"
I did however reproduce on AMD when the issue was created.
On 1.8 and newer, the gallery items look like this:
Note the white line in the top-right corner as well as the odd shadow
And on 1.7.3 and WineD3D it looks like this:
Bisected to fe43abbf3220b3a6f7f135c1e8749b6e01166bc6
Software information
WITCH ON THE HOLY NIGHT (2052410)
System information
Apitrace file(s)
woh-gallery.7z.zip