Close button of pop-up web form on tablet / touch device

The close button in the title bar of a pop-up web form doesn't work on my iPad. I am not sure but it looks like this is an issue for any tablet or touch device. Does anybody know a workaround other than showing the control bar and adding a close button in it?
1 answers

This is not very intuitive, but on an iPad, if you tap the text in the message box, the message box will close. This applies to message boxes that are created using Show Message action in a microflow.