Gray line in treatment labels for longer labels

See a grey line generated when using longer labels for treatment arms:

adsl <- forestly_adsl
adae <- forestly_adae

adsl$TRTA <- factor(forestly_adsl$TRT01A,
                    levels = c("Xanomeline Low Dose", "Placebo"),
                    labels = c("Low Dose   long label", "Placebo   long label")
)
adae$TRTA <- factor(forestly_adae$TRTA,
                    levels = c("Xanomeline Low Dose", "Placebo"),
                    labels = c("Low Dose   long label", "Placebo   long label")
)

meta <- meta_adam(population = adsl, observation = adae) |>
  define_plan(plan = plan(
    analysis = "ae_forestly",
    population = "apat",
    observation = "apat",
    parameter = "any;drug-related"
  )) |>
  define_analysis(name = "ae_forestly", label = "Interactive Forest Plot") |>
  define_population(
    name = "apat", group = "TRTA", id = "USUBJID",
    subset = SAFFL == "Y", label = "All Patient as Treated"
  ) |>
  define_observation(
    name = "apat", group = "TRTA",
    subset = SAFFL == "Y", label = "All Patient as Treated"
  ) |>
  define_parameter(
    name = "any",
    subset = NULL,
    label = "Any AEs",
    var = "AEDECOD", soc = "AEBODSYS"
  ) |>
  define_parameter(
    name = "drug-related",
    subset = toupper(AREL) == "RELATED",
    label = "Drug-related AEs",
    var = "AEDECOD", soc = "AEBODSYS"
  ) |>
  meta_build()

meta |>
  prepare_ae_forestly() |>
  format_ae_forestly( 
    display = c("n", "prop", "fig_prop")
    ) |>
  ae_forestly()

Start by running the supplied R example through the ae_forestly() entry point with the longer treatment labels, then inspect the forest-plot rendering path. Confirm the gray line appears with those labels and verify that the completed change removes it without changing the intended labels or plot output.