Unity动画师过渡到了另一个我没想到的状态

我的动画师状态机

<table border="1">
<tr>
<th>State Change</th>
<th>Conditions</th>
<th>Input Control</th>
</tr>
<tr>
<td>Idle -> Walk</td>
<td>IsMove == true</td>
<td>MouseDown anywhere in game</td>
</tr>
<tr>
<td>Walk -> Idle</td>
<td>IsMove == false</td>
<td>MouseUp anywhere in game</td>
</tr>
<tr>
<td>Walk -> Attack</td>
<td>Trigger "Attack"</td>
<td>MouseUp on enermies</td>
</tr>
<tr>
<td>Attack -> Idle</td>
<td>None</td>
<td>None</td>
</tr>
</table>

当鼠标悬停在敌人身上时，会发生两件事：

触发"攻击"并将"IsMove"设置为false

我确信在将"IsMove"设置为false之前会触发"Attack"

但状态变为步行->空闲，而不是步行->攻击TR