Simple button+label example misbehaving

I installed C++ Builder starter and tried to make my first forms app. I put a button and a label on the form, so when the button is clicked, label text changes to "Hello World!". When i run it and click the button, the text changes but then it changes back each time the mouse leaves the button. Also holding the button pressed keeps the label text on its default value. At first i thought this was an error on my side so i watched some youtube tutorials but as its all the same i guess theres an error with the IDE here.

I use the following line to change the label color:

    Label1->Text = "Hello World!";

Any help would be much appreciated