I would like to create a window that is “always on top”. I see a Window.alwaysOnTop property documented here: https://developer.mozilla.org/en-US/Add-ons/WebExtensions/API/windows/Window. It does not seem to be supported as a WindowCreateOption (get an exception in the debugger) and setting it programmatically in the create window callback seems to have no effect. Is this property not supported or is there some other way to set it?
I recall this only had affect on windows and it was not guranteed to work. It did not work for me in linux or macs, in my last test (a year ago). Is this the same experience you had?
I’ve a feeling this is supposed to be read-only. The documentation doesn’t make it clear, but there is nothing in the definition of this property that would be intended to make it a setter, only a getter. It is simply defined to be a boolean comparison between two properties of the actual window object.