I'm also on version 1111.
Copy/paste of pre-recorded audio is not working correctly for me.
To test - I isolated a section of the audio file so the copy selection pasted could be clearly seen. I selected and copied Bar 7. Bar 7 was pasted into the deleted section Bar 3 and 4. There was a dramatic change to the WAV form. So I pasted the copy selection onto a blank Utility Track and the results aren't correct.
The attached screen shots show the isolated selection in the first image and the pasted results at Bar 3 on the Audio Track in the second image. The third image displays what actually pasted at bar 3 on the Audio Track even though only Bar 7 was highlighted, copied and pasted.