Pollination farm yield seasons

Dear users,
I need to use the pollination model to get the potential pollination service on two different crops, flowering on two different seasons.
I am getting zero values on the pdep_y_w and y_wild outputs when I set to zero the fr_[SEASON], and I don’t understand why.

To illustrate the problem I will use the dataset provided with the software, and show the different tests I made.

I only changed the farm.shp file. This is the output :
image

If I want the crops to flower only during one season, I set the other fr_[SEASON] to zero.
image
The almond farm has pollinators (p_abund > 0) but y_wild is 0.

Then I tried to set both crops fr_summer to 1, keeping the almond season set to spring
image
In the almond farm the p_abund is 0 but yet the y_wild is positive.

If I set both crops fr_spring to 1 and fr_summer to 0

It seems only the fr_summer is taken into account to compute y_wild ?
Is it a normal behavior ? Is there something that I am missing ?
I am using the version 3.15.1.

Best regards