When enabling virtual texture lightmaps it looks different viewing

After switching the Virtual texture lightmap on/off, it looks different.

It looks like there is a difference in the light map because there are some missing shadows (see attached screenshots).

1. Open Third person template sample.
2. Set "Enable virtual texture support" to true.
3. Restart editor and take capture viewport after restarting.
4. Set "Enable virtual texture lightmaps" to true.
5. Restart editor and build lighting after restarting.
6. Compare the look of step3 and current view.