Is there an option to enable personal builds to be picked up by "Finished Build" type triggers?

I have a build configuration dependency graph in which a given configuration (C) is triggered by a "Finished Build" coming from another configuration (B). 

Just to be extra clear, here's what the "Triggers" page for configuration C would look like:

The issue that I've found is that personal builds coming from configuration B are not picked up by this trigger, and therefore never produce a transitive build on configuration C. Furthermore, there does not seem to be an option to change this behavior anywhere in the Team City UI. 

This is what a build chain involving these configurations looks like when not running a personal build:

Notice that all goes well and that configuration C is triggered.

The following exemplifies a build chain involving the same dependent configurations, but with B being launched as a personal build:

Notice that the top-right label not displays "Not triggered", as does the status for the (non-existent) build from configuration C.

We are running TeamCity Enterprise 9.1.5 (build 37377).

Is this the intended behavior? If so, is it documented anywhere? Did this change in more recent versions of Team city? More importantly, is there a way to change this to make sure that personal builds do get picked up?