Sergey Sharybin
1e7afea2bb
The root of the issue comes to the fact that sub-data pointers were used to match strips before/after copy-on-write. The undo system might re-use sub-data pointers after re-allocating them, making it so that, for example, pointer used by sound strip is later re-used by video strip. This fix takes an advantage of recently introduced per-sequence UUID and uses it to match sequences before/after copy-on-write.