There's a few places in InDesign where you can accidentally hit the "Reveal in Bridge" and if you don't have this installed on your computer already - it will auto-install the app from the Creative Cloud.

I don't think it should do this - it should prompt you to if you want to install this to your computer rather than forcing the download.

I also would like an option to Disable the Reveal in Bridge - as I don't use it and it's so annoying when you have to go back and uninstall apps that you never wanted installed.