LOD editor crash

Hello Everyone,

Today I tried to make some LOD’s for a tree that is in my level, for optimization.

Now the tree has about 15.000 triangles.
I’ve added some LOD’s and was ready to apply the changes that I’ve made.
The only change that I had made was the precent triangles. But when I pressed apply, the engine crashed. I’ve tried to do it with different assets, but from all of those only one asset did not crash.

Any tips so that I can fix this?

Thank you.

Thats same for me it crashes for forewer.
I found its a known bug but isnt it fixed yet ?