RunModel: Suspected bug on `OutputsModel$Qsim` in the training example

In the training example (https://gitlab.irstea.fr/in-wop/formation-airgriwrm) in the airGRiwrm naturalised flow example, we have this result of simulation for the downstream node:

$ CHALO_21:List of 22
  ..$ DatesR  : POSIXlt[1:4749], format: "1995-08-01" "1995-08-02" "1995-08-03" "1995-08-04" ...
  ..$ PotEvap : num [1:4749] 4.4 4.5 4.2 4.2 4.3 4 3.4 3 3.6 3.8 ...
  ..$ Precip  : num [1:4749] 0 0 0 0 0 1.8 10.5 0.4 0 0 ...
  ..$ Prod    : num [1:4749] 310 307 304 301 297 ...
  ..$ Pn      : num [1:4749] 0 0 0 0 0 0 7.1 0 0 0 ...
  ..$ Ps      : num [1:4749] 0 0 0 0 0 ...
  ..$ AE      : num [1:4749] 3.11 3.16 2.93 2.91 2.95 ...
  ..$ Perc    : num [1:4749] 0.131 0.125 0.119 0.113 0.107 ...
  ..$ PR      : num [1:4749] 0.131 0.125 0.119 0.113 0.107 ...
  ..$ Q9      : num [1:4749] 0.388 0.442 0.5 0.563 0.136 ...
  ..$ Q1      : num [1:4749] 0.099 0.0915 0.0847 0.0788 0.0699 ...
  ..$ Rout    : num [1:4749] 33 32.8 32.7 32.7 32.3 ...
  ..$ Exch    : num [1:4749] -0.229 -0.224 -0.22 -0.218 -0.217 ...
  ..$ AExch1  : num [1:4749] -0.229 -0.224 -0.22 -0.218 -0.217 ...
  ..$ AExch2  : num [1:4749] -0.099 -0.0915 -0.0847 -0.0788 -0.0699 ...
  ..$ AExch   : num [1:4749] -0.328 -0.315 -0.304 -0.296 -0.287 ...
  ..$ QR      : num [1:4749] 0.393 0.383 0.378 0.376 0.351 ...
  ..$ QD      : num [1:4749] 0 0 0 0 0 0 0 0 0 0 ...
  ..$ Qsim    : Named num [1:4749] 0.0859 0.1731 0.2319 0.2525 0.2418 ...
  .. ..- attr(*, "names")= chr [1:4749] "" "" "13515" "13516" ...
  ..$ StateEnd:List of 4
  .. ..$ Store          :List of 4
  .. .. ..$ Prod: num 317
  .. .. ..$ Rout: num 29.9
  .. .. ..$ Exp : num NA
  .. .. ..$ Int : num NA
  .. ..$ UH             :List of 2
  .. .. ..$ UH1: num [1:20] 0.18 0.182 0.184 0.186 0.187 ...
  .. .. ..$ UH2: num [1:40] 0.0209 0.0206 0.0203 0.02 0.0196 ...
  .. ..$ CemaNeigeLayers:List of 4
  .. .. ..$ G      : num NA
  .. .. ..$ eTG    : num NA
  .. .. ..$ Gthr   : num NA
  .. .. ..$ Glocmax: num NA
  .. ..$ SD             :List of 3
  .. .. ..$ : Named num [1:3] 541563 534570 523807
  .. .. .. ..- attr(*, "names")= chr [1:3] "18261" "18262" "18263"
  .. .. ..$ : Named num [1:3] 95772 93020 91120
  .. .. .. ..- attr(*, "names")= chr [1:3] "18261" "18262" "18263"
  .. .. ..$ : Named num [1:2] 508672 496590
  .. .. .. ..- attr(*, "names")= chr [1:2] "18262" "18263"
  .. ..- attr(*, "class")= chr [1:3] "IniStates" "GR" "daily"
  ..$ QsimDown: num [1:4749] 0.393 0.383 0.378 0.376 0.351 ...
  ..$ Qsim_m3 : Named num [1:4749] 540230 1089349 1458910 1588607 1521507 ...
  .. ..- attr(*, "names")= chr [1:4749] "" "" "13515" "13516" ...
  ..- attr(*, "class")= chr [1:3] "OutputsModel" "daily" "GR"
 - attr(*, "class")= chr [1:2] "GRiwrmOutputsModel" "list"
 - attr(*, "Qm3s")=Classes ‘Qm3s’ and 'data.frame':	4749 obs. of  5 variables:
  ..$ DatesR  : POSIXct[1:4749], format: "1995-08-01" "1995-08-02" "1995-08-03" "1995-08-04" ...
  ..$ STDIZ_04: num [1:4749] 5.46 5.28 5.11 4.95 4.8 ...
  ..$ LOUVE_19: num [1:4749] 0.858 0.836 0.815 0.795 0.775 ...
  ..$ VITRY_25: num [1:4749] 6.65 6.43 6.23 6.04 5.86 ...
  ..$ CHALO_21: num [1:4749] 6.25 12.61 16.89 18.39 17.61 ...

Here,we have QSimDown > Qsim which is very suspicious because the flow is supposed to come from upstream basins in dry weather...