One of the first issues tomato growers experience is Tomato Leaf Roll. It comes as a shock to gardeners as they are so happy that their tomato plant has grown quickly and looks great, then all of the sudden, bam. I liken it to the awkward teenage years. The plant’s top growth has outgrown the root growth. The plant is out of balance, like an awkward teenager with disproportionate arms and legs. The plant realizes it needs to cut back on leaf area for a bit to focus on root growth, so it rolls its leaves. Some varieties have a tendency to do this more than others. The condition corrects itself over a few weeks. To learn more about it, here’s a link from K-State Extension and Research.
https://hnr.k-state.edu/extension/info-center/common-pest-problems/common-pest-problem-new/Tomato%20Leaf%20Roll.pdf
https://hnr.k-state.edu/extension/info-center/common-pest-problems/common-pest-problem-new/Tomato%20Leaf%20Roll.pdf