One project file I am working on is being showing recurrent playback misbehaviour. At first and apparently out of the blue, only one instrument was sounding in playback; issue was solved by reloading the playback template (HSS+HSO pro). Now playback is only coming through the left output, despite all balance and pan controls being set to the centre. This happens only with one specific file and with any output device I have tried (I suspected my headphones were broken, but they aren’t). When triggering the balance or the pan controls to the right, sound fades out.
Thanks in advance for helping!