1 Generate a short tone a few seconds long. 2 Add a new mono track and generate some low level but audible noise of the same length. 3 Select All and Tracks > Align Tracks > Align End to End. 4 Make Stereo Track on the upper track. 5 Select All and Play. When the playback cursor crosses into the area that has white space in the left channel, a slightly broken up and lower pitched tone continues in the left channel. 6 Loop play instead and playback is correct. Mix and Render or export is correct. Split stereo track then standard play is correct again. 7 Undo Split Stereo Track, use the Track Dropdown Menu to Swap Stereo Channels. 8 Play. When the playback cursor crosses into the area that has white space in the right channel, there is no playback of the noise in the left channel. 9 Drag from the end of the tone to time zero and generate a tone so the white space is now only trailing. Select All and Play. Still no playback in the left channel.

GROUP: Playback and Recording * '''If you [http://manual.audacityteam.org/o/man/audio_track_dropdown_menu.html Make Stereo Track] on tracks where either track contains white space, playback of the left channel may be incorrect.''' A left channel that should be silent will play a distorted version of its previous audio. A left channel that should contain audio will be silent if there is white space underneath it in the right channel. '''Workaround:''' To hear the correct audio, loop play, Undo Make Stereo or Tracks > Mix and Render. Export is unaffected, and does not require workarounds.