Version 0.18.6 released

• Fixed a crash related to multiple blocks reserved for different trains but later merged by placing a rail. more
  
• Fixed that construction robots were missing their working animation. more
  
• Fixed circuit network debug visualization text overlap. more
  
• Fixed the circuit network tooltip backgrounds didn't highlight correctly. more
  
• Fixed that script.active_mods wouldn't be accurate when loading save files in some cases. more
  
• Fixed that the sync-mods-with-save feature would try to download mods it didn't need to in some cases. more
  
• Fixed that trains pathfinder could create non contiguous path in case of single segment cycle with a junction. more
  
• Fixed possible crash when units were attacking rails with train on them. more
  
• Fixed pump would consume energy and play animation when it tried to transfer very small amount of fluid but failed to do so. more
  
• Fixed creating fire entity by trigger effect invoked by a particle would crash the game.
  
• Fixed overriding LuaSurface::brightness_visual_weight would cause light map to appear in map view. more
  

• Building entities with from items with 0 health will set the entity to 1 health instead of 0. more
  
• Added LuaGameScript::reset_time_played() which will reset the 'Time played' to 0.
  

You can get experimental releases by selecting the '0.18.x' beta branch under Factorio's properties in Steam.