Suspicious dirt pile spawning in oasis lake

Step 1: Examine a suspicious dirt pile near the oasis lake in summer, when the oasis lake is full.

Step 2: Follow the direction it shows to find the next suspicious dirt pile.

Step 3: If you see the suspicious dirt pile spawning in the oasis lake, click on it to try to investigate suspicious dirt pile.

Result: You see the character trying to reach the pile but can't, as the oasis lake is full.

It is not guaranteed that you can reproduce this bug every time, as it depends on the generated location of the suspicious dirt pile, which is random.