Merge pull request #12148 from pchote/fix-wall-glitch

Prevent TickRender from running before the world's first Tick.

OpenRA.Game/Game.cs

@@ -566,7 +566,9 @@ namespace OpenRA
 					else
 						PerfHistory.Tick();
 
-					Sync.CheckSyncUnchanged(world, () => world.TickRender(worldRenderer));
+					// Wait until we have done our first world Tick before TickRendering
+					if (orderManager.LocalFrameNumber > 0)
+						Sync.CheckSyncUnchanged(world, () => world.TickRender(worldRenderer));
 				}
 			}
 		}