Your seeing your evaporation points.....
its maintaining moisture at the top due to the clover shading the soil
its losing moisture in the middle (bringing air in) due to the concentration of roots drinking and evaporation
its maintaining moisture at the bottom as gravity pulls the water down and can't evaporate being on the floor
Here is a DBHP boy in a 3 gallon smart pot using the blumat system to water for me
Same boy getting a repot into some fresh soil then stuck back into the same 3 gallon pot....using the flash, we see clear area's that appears fairly dry
As you see I have a fair amount of perlite to prevent compaction while soaking up some of the excess water so its not all evaporated off. Broke up the bottom to check the root system.....
Now we see area's that are too wet from the blumat being turned up too high (no evaporation) with less white roots in this area, just the right moisture towards the middle as the soil pulled it in with thicker white roots in this area and seemingly on the dry side where the blumat wasn't able to keep the soil water logged though with a fair amount of perlite to retain some of the water there was no root loss due to air pruning. In fact, as you see it promoted the roots to cluster in that area.
Here is the same boy 6 wks later, in the same pot given 4c water every 3-4 days for a month
This is the beauty of fabric pots...... as the soil evaporates, it allows air to get to the root system while the perlite retains enough moisture to promote growth until the next watering day. Once the root system gets so big and is needing more water, the air prunes the roots in the seemingly drier area's of the soil promoting roots from the root ball to take their place for continued, steady growth in a smaller pot.
Tulips soil is more dense so less air is getting to the roots on the top and bottom with some of the roots browning in these area's unable to breathe....without the evaporation in the middle next to the fabric (where your main root ball is), she would have rotted out unable to bring in needed oxygen. With or without flash, if this area was truly dry, we would see less white roots clustered in this area as they brown and die off not more