Anima Tree Meditation issue

[direct91]

Everything was working fine.  I had meditation spots set up around the anima tree, had grass growing, and had my first linking ritual. 

After the first ritual, the "Need meditation spot" info popped up, and the colonists no longer meditate at the tree (even though they have previously). 

Tried removing the spots and re-adding, setting the spots as owners, removing the scheduled time and re-adding, and checked the zones/doors to make sure they could get there.  The colonists spend the meditation time inside meditating on the floor instead of the tree. 

No mods, all DLCs.