With the use of Custom Types in Linx 5, you may notice that a solution’s size increases dramatically when a large number of nested custom types are added. This increase is especially noticeable when you have Custom Types made up of Lists of Custom Types and multiple “local” instances of the Custom Type.
This is not a bug of Linx 5 and is not a cause for concern, please just note that your solution file size may grow considerably when working with complex custom types.