- there's a problem with technology discovery. Some technologies supposed to be discovered "late" are discovered much sooner by the AI (everytime I encountered this, it was Strosstruppen researched in 1915 instead of 1917), but there is also more amazing: I discovered Siege artillery as French player in August 1914 and I can construct siege artillery BUT
I never started that research and this is not checked as discovered technology in the research screen.
Not a bug, but an original boardgame design decision:
1) Siege technology is available at start in 1914 for Central Powers
2) Stosstruppen technology can be researched by Central Powers from 1915 onwards, while for the Entente this research is released only in 1917...