LOD / Imposter not facing camera

I am using PCG and GrassType to spawn trees with random rotation, but it seems that imposters are not facing the camera.

If I untick random rotation though they will all face the same direction.

Any ideas how make that work better?

@Greg55 I faced with the same issue today…

For me the issue was looking this way:

I discovered that this is because I disabled Evaluate World Position Offset for all PCG instances.

I had to re-enable it, but, for better performance, I also removed the connection to World Position Offset in the instance material (not the imposter):

Now I think I could reconnect this World Position Offset for for high quality LODs materials.

But, if anybody knows a better solution, please share.