SW2014 SP5 and earlier versions as well.
We have seen an occasional pain when rolled back and wanting to roll forward to specific feature.
What we see, and of course not all of the time so it is difficult to reproduce, is that if we are rolled back in the history tree, then select a feature lower in the history tree and select roll forward, that occasionally the part rolls to the end of the feature tree instead.
We are sure that we have selected roll forward not roll to end, several of that have seen this and there just isnt anything that makes sense in the knowledge base for answers.
let me know if you have seen this, or if you have heard of an explanation.