Vassal got stuck after using red ruler

I was playing a game with my opponent using Warmachine module and at one point we both tried to use the red ruler at the same time. After that, the entire game could not be altered. Models/counters couldn’t be placed, moved or selected. We even tried saving the game and reloading, but that didn’t work either. We weren’t sure if this was a bug with the Vassal engine or the WM engine, just trying to report the bug though.