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In one battle (Inferno campaign), an enemy unit of "Madmen" merged with the castle gates. When I hovered the cursor over them, it said they were the gates. However, they were displayed correctly, both the image and the number. At the same time, I couldn't attack them, but they were successfully attacking my units. True, they could only move under the gates and within a radius of 1 cell from them.

There are some funny bugs sometimes...