Since SU6 my custom TWYs (projected meshes) are not displayed in editor nor in the package. Some parts of the projected mesh are displayed all the time, some parts in a reverse logic are displayed if zoom out but not displayed if zoom in, some parts are not displayed at all.
All my airports are have been affected. Only large projected meshes (TWYs) have been affected, the small ones are not affected.
For testing purposes, I can send the project, if needed.