Hi Steven
I've been using Studio One as my main DAW since 2013. I use Pro Tools, Logic X, and Mixbus 32C but Studio One for recording & comping on a daily basis. I do this for a living - nope, no settings I've "accidentally" changed - and even if that were so - what setting would do such a thing?? a take from a different part of a song playing back over a later segment, AFTER recording a new take, and then magically, after closing and opening S1 again the correct take is played? That is bug, even if it's just on my system!
To be clear. I recorded a vocal, then did some drop-ins creating two new layers. After recording the two lines of a verse, I moved on to a chorus section, dropped in and recorded there, but when I played back, the previous verse line take was played over this chorus. Not by any stretch of the imagination can I think of a setting that would allow you to do this, or even think of a reason why anyone would want to do this!
This is not a behaviour I've ever seen in any DAW. It is most unusual and I cannot get my head around how it is happening. All I can say is that this has happened once or twice in the last month and I've not done anything that I don't do on a daily basis with S1.
I've raised a support ticket but tbh I'm not hopeful of a solution if no-one else is experiencing this, and no crash report to examine.
You ask for recording track setup to try and replicate - it's simply 2 audio tracks of acoustic guitar, and one vocal. nothing else. It was a sketch for a project, a simple Metric Halo Channel strip in each audio track slot, Valhalla Verb in an aux, and that's it. Hardly a complex setup! I cannot remember the setup the last time it happened but as I was working on a large album project of a client, with the vocalist and guitarist overdubbing, it was a pretty big setup - we were tearing our hair out trying to figure it out. Gave up trying, and the issue stopped the next day session. Peculiar, you bet!