In Spectrogram view if you change the Algorithm to Pitch (EAC) that turns off "Enable Spectral Selection" (which is normally "on" by default).

You cannot turn it on again from the TCP>Spectrogram Settings dialog.

14) After Step 13 you can turn the preference for "Enable Spectral Selection" (which had also been erroneously turned off at step 7) back on again.  
15) If you then in TCP>Spectrogram settings you choose "Use Preferences" and OK
16) Observe: Algorithm reverts to Frequencies and spectral selection is enabled and spectral selections can be mad.

Curiously if at Step 5 you make a spectral selection before changing the algorithm to Pitch(EAC) when you do make the change the spectral selection disappears.  But then after Step 15 here the selection is reinstated as-was in the Frequencies view.

As
a) this is a regression on 2.4.2
b) Spectral Selection is one of the key (if not the key) feature of Spectrogram view
I am grading this as P1

This bug affects all three platforms.


It was originally reported as a residual of Bug #2554
>Win & Linux: Spectrogram view, changing algorithm to Pitch (EAC) or
>Reassignment prevents reversion to Frequencies algorithm