I have create a flare , it is here: https://www.2dimensions.com/a/fengqiangboy/files/flare/scan.
it looks like

But when I use it in flutter, it miss half of cycle

I have create a demo project at: https://github.com/fengqiangboy/scan_flare
Have the same issue with stroke offset property
We caught an issue with our trim path logic, and it should be fixed with the latest commit on master.
I've tested your file locally and it seems to be rendering the whole path correctly now!
Most helpful comment
We caught an issue with our trim path logic, and it should be fixed with the latest commit on
master.I've tested your file locally and it seems to be rendering the whole path correctly now!