Ok I’m going to try one more time to explain this PROBLEM in its simplest form. It is indeed a bug and it NEEDS to be fixed.
1.) Import two wav clips into a Cubase project each on separate tracks. Make them the same length and arrange them vertically, one on top of the other, occupying the same sequence of time. @Steve your .gif only demonstrated the ability using clips on a single track. You need to try these steps, making sure you are interacting with clips from TWO DIFFERENT TRACKS.
2.) If you click+drag and select the two clips… you can proceed to make changes to parameters like Volume on the ‘info line’ and it will indeed affect the parameters of both clips.
3.) Next, MUTE both of the clips, click+drag and select them both again… now you are NOT ALLOWED to make changes to parameters like Volume on the ‘info line’.This is expected behavior.
4.) Now, UNMUTE the TOP clip only, leaving the BOTTOM clip still muted/greyed-out… click+drag select them both again. Cubase allows us to make changes to paramters like Volume on the ‘info line’. (even though, the lower clip was in a muted state.). Still Ok. Fine.
5.) Last, try UNMUTING the BOTTOM clip only, and make sure the TOP clip is muted/greyed-out again… now click+drag select them both. Cubase will NOT allow any changes to the Volume parameter of the ‘info line’!
^^^ This is the bug. It shouldn’t make a difference whether the top or bottom clip is muted when click-dragging to select multiple clips. Makes no sense why one would be allowed and not the other. To be even clearer, in order to produce the bug, even on a group of MANY tracks of MANY clips, you will only get it to fail if the HIGHEST (vertically) track of the selection contains ONLY muted clips… if the HIGHEST track has a single active / unmuted clip IN THE SELECTION, cubase will work fine.
The real big fix / answer is just to let us change info-line clip gain parameters on ALL clips in ALL states… (unless the clips are LOCKED). Easy fix for a stupid bug that makes my slip editing take twice as long as it should.