Hi, I think I've found a bug in ROM.
I'm running Steam version in Windows 10 Pro (x64).
At the beginning of chapter 4, in G.G. Park, if I click at a tree the game screen turns black (except a 1 px column at the top right) and only shows a rolling paper animation, instead of just greyed out the image. Then Turning talks, and when he/it finishes, the screen continues black and the game can't continue. If I save and reload the game the black screen is still there.
I have the savegame, but I can't send you because I don't know where is in my PC http://steamcommunity.com/sharedfiles/filedetails/?id=772586706
Capture of the bug: