Comment 1 for bug 1251832

Most probably a bug yes, unless the URL defined for the app happens to also be part of the window / tabs you have open in your browser. But that shouldn't be the case if you've just created the webapp from the prompt in your browser.

Can you share the list of desktop files you have in ~/.local/share/applications/ and the content of the one corresponding to the webapp in question? there may be more than one, which is could be part of the bug itself.

Did you