If you are working with hybrids, sometimes they revert or one plant prevails in the gene pool

I've found cuttings often do grow at different rates. I can't see much difference between the leaves of the two plants . Are the leaves of the larger one still scented? I would suggest that the larger one simply grew roots before the small one. If they were in different pots it would look as though the small one had more light than the large one but that can't be the reason when they are both in the same pot. If they continue to grow like this and you don't like the spindly one just discard it.

Thanks for your replies. I don't mind the spindly one,just fascinated at the difference in size. The leaves are still rose scented. They have all been in this pot since I cut them...I did wonder if it was some odd gene that was coming out. I hope I can keep it going and will be interested to see what happens after I separate them this weekend.

You may well find the smaller one has fewer roots - would like to know the results please!

They are all well anchored Steragram! I will let you know what happens to them...to be continued....!