In qt-creator-3, when opening a cmake-based project, a windows appeared prompting for additional options to be passed to cmake (if any needed).

In qt-creator-4 there is no such window appearing when opening cmake project. And that is pretty inconvenient. Sometimes it happens that project by default expects some dependency to be present in system and has an option to disable this dependency. With qt-creator-3 it was possible to pass that option to cmake in qt-creator itself, thus allowing you to successfully open a project without a need to install all unneeded dependencies, with qt-creator-4 it is a hardly possible task to do.