A.G.R.A.E.L., the issue probably wasn't caused by the patch, but rather by starting a new game.

Actually, the problem was with the old version; before, the computer was given twice as many resources, and from the very beginning, it had two levels of units and a town hall built. I tested it: I started a game against the computer, played for a while, saved, and then loaded the game in a multiplayer setting (replacing the computer with a player) and saw the harsh truth!:smile50:
After patch 1.3, everything worked fine. Now I'm playing version 1.60.