Odd animations for cached nodes under various transforms

The attached test case shows a couple of problems with animating cached nodes smoothly.

The nodes are divided into a grid of various default transforms applied to the nodes, combined with a variety of cache hints, and then a timeline of various animations for various transforms is applied.

All nodes in a given row should look like the leftmost version (the uncached version), but we find the following anomalies:

- Under translation and scaling the hinted nodes jump around a bit.
- Under "shearing in Y" some of the nodes translate quite far instead of shearing