Hi, have you run into any bugs while playing ONH? This is the place to report those, and I will try to get them fixed as soon as possible.

There are a few issues which come up commonly, some of which are solvable and some aren't. Figured I'd formally list them all somewhere.

Issue
SBCameraScroll textures aren't lining up with geometry

Why this happens
SBCameraScroll has to merge all the room pngs together which takes a while, so it will only do this the first time a region is entered. If a room changes after the CameraScroll texture is generated (such as by installing a region mod that modifies vanilla rooms) then the textures get messed up.

Solution
Delete the CameraScroll textures so it'll generate new ones. You can find them in steamapps\workshop\content\312520\2928752589\world and for ONH, the ones you'll need to delete are
world\sb-rooms\sb_f03.png
world\sb-rooms\sb_a11.png
world\sh-rooms\sh_e03.png
world\sh-rooms\sh_e03riv.png


Issue
HUD map has misaligned rooms and paths

Why this happens
Rain World 1.9 has half-written map merging code for custom regions. Since it's half-written it is impossible to replace the map file, but they also don't merge correctly. This is an issue with 1.9, not with the mod.

Solution
There's no good solution for the time being, can only hope it will be fixed in a future RW update

Issue
Room connections lead to the wrong place

Why this happens
When ONH room connections are used on MSC rooms, the connections get mismatched. This shouldn't be possible as far as I'm aware as the game should always use ONH rooms instead of MSC ones, but for some reason a few people have still run into this issue. Please let me know if you have this issue, as the more reports I get I can better figure out what's happening

Solution
Navigate to steamapps\workshop\content\312520\2923214961\world and grab the following files:
world\sb-rooms\sb_f03.txt
world\sb-rooms\sb_a11.txt
world\sh-rooms\sh_e03.txt
world\sh-rooms\sh_e03riv.txt
Copy these files into Rain World\RainWorld_Data\StreamingAssets\mergedmods\world and put them in the same sub-directory as they came from. This will need to be redone any time mods are changed.
I will be looking for a more proper solution, but I cannot replicate this issue on my machine, and I can't find any consistencies between who has this issue and who doesn't. So please let me know if you have this issue, as the more reports I get the better I can figure out what's happening