PowerShell Invoke-Sqlcmd切换到sqlps会话

I am writing a script in PowerShell ISE and I am using Invoke-Sqlcmd. After the command is executed the Powershell session switches into sqlps session (PS SQLSERVER:>) and I can't execute script for the second time. I have to quit PowerShell ISE and start it again.I am writing a script in PowerShell ISE and I a