I realized this recently that SUOs were not registered in the script exports
properly. In AGS standards the object having a memory buffer should
register that buffer's address directly, so that it could be read and written
to directly. That is how strings, arrays, and any other structs are exported.
This also how the engine plugins can access the data if they use script API
to retrieve it.
There have not been any script API working with custom structs earlier,
but there is since 3.5.0 (few functions returning managed Point struct).
Plugins won't be able to use them correctly without this fix.
From upstream 9658c71528676acb386e2c638e782cc4e7d2afe5
Walter Agazzi
Le Philousophe
Paul Gilbert
Eugene Sandulenko