Can’t change colour(grass) on the ground.

Haven’t played for many months, and started the game again. After upgrades it all seemed fine until I tried to change colour(grass) on the ground.. It didn’t work! The new terrain-things are perfect and everything else works. 

But when I “use the brush-thing” nothings happens! I can move the cursor around, change size on the brush and type of grass but nothing happens when I click on the ground.

I can’t figure it out and I tried to reload the game, change world, change household - the problem is everywhere.

I have no mods or anything else.

Anyone else with the same problem?

/Vicky from Sweden