Change the console input pane's -webkit-user-modify property to read-write-plaintext-only.
Created attachment 10914 [details] Fixes this.
Comment on attachment 10914 [details] Fixes this. r=me
Landed in r10708.
Closing since Drosera has been replaced by the new Web Inspector debugger. Moving to the New Bugs component so the Drosera component can be closed and removed.