These pupils were attracted by the realist, Austrian Husserl who, at the turn of the century, was engaged in developing the ideas of Bolzano, Brentano and Mach. Indeed, the analysing, descriptive way of doing phenomenology went out of fashion and was all but dead by 1934. Fourthly, as philosophical topics go, these topics are all relative newcomers. It is difficult to find analyses of these matters, as detailed and as argued as those given by Brentano's heirs and by analytic philosophers, before the end of the last century. Finally, as far as I can tell, this intriguing part of the history of philosophy on the Continent was completely forgotten.
Continental philosophers are wont to call the return of the repressed.