Hello,
When I try to add equalization to a track, it automatically adjusts it to the entire track and not just the part I have selected.
This also happens if I have multiple tracks. The equalization will be adjusted on both tracks even if I have just selected one to edit.
I have tested this on my W10 laptop with Audacity 2.3.1 and I cannot reproduce what you report.
The Equalization is applied to precisely my selections.
WC
Ahhhh - but then I thought to turn on the Preference in Tracks Behaviors for Auto-select, if selection required
And with that checked “on” then I do get some odd behaviors - and not just with EQ - the same occurs with Amplify, Normalize (and I suspect all effects)
- check “on” Auto-select, if selection required
- make a selection
- clear the selection by clicking in the dark gray background
- apply EQ (or any other effect)
- observe that the effect is applied to the selection that was made in step 2 (and not the whole project)
This is definitely a bug that I shall be logging on our Bugzilla bugtracker.
Good catch evanubene19 - thanks for reporting this

In the meantime the workaround is to turn “off” Auto-select, if selection required in Edit > Preferences > Tracks Behaviors
Peter.
This has now been fixed for the next release of Audacity (2.3.2).
See: https://bugzilla.audacityteam.org/show_bug.cgi?id=2084
Peter.