Removed a package from my web app yesterday, turns out the package also removes Bootstrap as it's a dependency. TF?! Who removes Bootstrap with an insignificant plugin? Why?!

Same thing with many Linux distros. Good that Arch Linux doesn't do this. Pacman package manager for the win.

If the package is installed with bootstrap, its a dependency of bootstrap, thus its perfectly normal of it removing bootstrap.
Howevr, if the package has bootstrap as a dependency, bootstrap will not be removed *provided* that another pkg has bootstrap as dep and/or bootstrap is set to manual install.

Setting manual install, is easy as "sudo apt-get install <pkg>" when that pkg is already installed. It will then say sometimes like "<pkg> was marked as manually installed"

@sebastian: Sure, in your Linux world. This was Visual Studio, which the default web apps come with Bootstrap. The whole app is dependent on Bootstrap... TF koTable?!