Reproduce:

• Select two commits not on current branch (one of which is head of another branch).
• right click on one of them and choose cherry pick
• follow process to make new commit

Observed result:

• SourceTree fails during git command, complaining that a cherry-pick is already in progress.

Expected result:

• both commits get recreated (either together or separately) as commits against the current branch.

If the commits are separately cherry-picked there is no problem (and no merge conflicts) although the combined request fails, even though one is allowed to pick several commits and ask to cherry pick them all.