Bazaar confused about flatpak being installed or not

I attempted to uninstall an app with Bazaar, but it didn't work for some reason - or, at least, it didn't think it worked. The app isn't in the app menu, at any rate. Looking at it in Bazaar, there's the open button and the remove button, but neither works; the open button says it isn't installed, and the remove button does nothing. A little help?