In track view my preference is to have the inspector section docked to left and reduced to show just the track info and not the bus info.
In X3 clicking on either of the tabs at the top clip/track/pro ch would open up the respective windows and clicking again would close them, thus reducing the inspector to it's original state.
In Plat this is no longer the case with the clip tab. The other two still behave in the same way as before but clip tab closes the clip window but does not return the inspector to it's reduced sate, so I then have to click on one of the other 2 twice to "close" it properly (IMO)
So, as per the title - changed for a good reason (I'd like to hear it) or broken, ?