I'm not really sure weather this post is considered to be ok to be in this category. please inform me if it's irrelevant, and should be deleted.
I happened to experience a problem that, operations in Blender being continuously performed even when user's input gets focused by other windowed applications.
Here is how one can reproduce the problem.
While grab operation in Blender is activated in object mode, let any other program instance be activated in the midst of the operation. You will notice how grab operation keep functioning until you return to Blender, and manually end the operation.
Here, I'm providing a brief specification of my system.
CPU: Intel Core i7-7500U
OS : Windows 10 Home (64 bit)
Graphics Card : Intel HD Graphics 620