The text you quote is referring to the layout text for buttons, but you appear to be trying to enter a return into a text field so it does not appear that the info you are quoting applies to the issue at hand.
no, I am referring to the layout of buttons. See attached screenshot of IWP in Firefox. The returns I set and see in Filemaker are not being displayed in the browser. The second button displays a new line just because the text does not fit in the first line. The first and the third button do not show the return which is included in their labels.
Regards from Germany,
No idea anybody?
Looks like a Filmaker IWP Bug.
Bugs should be reported in the Report an Issue section of this forum where you will be asked additional questions to fully document the issue you have encountered.
As a work around, you might split your text into two text objects, one for each line, position them as needed above your button graphic and then group them into a single button object.