Homebutton has weird side-effects

Pressing the home button used to work fine (except for the delay that’s already reported), but now that I press it, looks like it closes the launcher and brings it back up again. But weirdly every other press it hides my custom widget. Also, pressing it won’t hide the search like it used to, but brings that just back up. I’ve tried restarting the phone and replacing the widget. Been happening for some weeks at least, and I’ve been just lazily hoping for it to be fixed.