Symptoms
Assume that you are designing a maintenance plan in Microsoft SQL Server 2014 Management Studio (SSMS 2014). Occasionally, when you try to move or resize a task, the position of the mouse pointer unexpectedly moves to the upper-left corner of the designer surface. Additionally, the screen view may zoom all the way out, decreasing the task size to the smallest possible. Either symptom may require you to scroll to the right side and down to see the task.
Resolution
The issue was first fixed in the following cumulative update of SQL Server.
Cumulative Update 4 for SQL Server 2014 /en-us/help/2999197
About cumulative updates for SQL Server
Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server:
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.