Bugzilla – Bug 1387
Cannot scroll selection rightwards if right edge of track focus border at or beyond right edge of monitor.
Last modified: 2018-08-20 11:51:53 UTC
I see steps 1 to 3 on all OS'es (in 2.1.1 too). If the left edge of the track focus border is at or beyond the left edge of the screen, you can scroll selections leftwards. On El Capitan you can still scroll the selection rightwards after using the green "full screen" button or COMMAND + / for Audacity's "Full Screen".
https://github.com/audacity/audacity/commit/ba0b5a70a3e27cf76e5ff61b3f1023b895c65cbf
Thanks, Paul. Seems OK to me on Win 10, El Capitan and Ubuntu 14.04. I also tested scrolling the selection left and right on Audacity split across two monitors on Windows 10, and it seemed to work as expected.