Problem when loading ECMWF seasonal forecast data

Hello, I am trying to load data from ECMWF (seasonal forecast daily and subdaily data on single levels). The data is from system 5. I am using the CSTools Load function, but I also tried to use the s2dv Load function directly, with the same issue. The data is not loaded correctly and data is missing when different number and time step is selected from the data cube.

The file I'm using: https://drive.google.com/file/d/17qiVUbH3TbK3_bfoMyuSTQQmI6aJr-XT/view?usp=sharing

The minimal loading code is the following:

exp <- list(list(
    name = "experiment_ecmwf",
    path = file.path("/experiment/$YEAR$/$VAR_NAME$_$START_DATE$.nc")
  ))

domain <- list(lonmin=-15, lonmax=60, latmin=30, latmax=70)

exp_dat <- CST_Load(
    var = "mx2t24",
    exp = exp,
    obs = NULL,
    sdates = c('19930201'),
    output = "lonlat",
    leadtimemin = 1,
    leadtimemax = 214,
    latmin = domain$latmin,
    latmax = domain$latmax,
    lonmin = domain$lonmin,
    lonmax = domain$lonmax,
    dimnames = list(lon='longitude', lat='latitude', member='number'))