Revit export to DWG without hatches in visual style Hidden Line

[nathanERDLX]

As the title explains, Revit seems to forget my wall patterns when I make a DWG export. I've noticed that it does export the patterns of the walls which do not have a floor above them. 
It's a structural plan with hidden line as visual style, so that my walls above are drawn in dashed lines. Wireframe solves this issue but this also means that the walls of the floor above become visible, which is something we do not want. 

I've noticed that there was a similar bug in 2024 but it should've been solved in 2025. Anyone experiencing the same issue and/or have a solution? 

[nathanERDLX · Accepted solution]

I've found the cause and solution. We're applying a transparency filter for bearing walls, so our beams become visible in walls. Transparency was set to 1%. By turning this up to 100% the hatches become visible again.