Why does broom::tidy occasionally return a wrong type of 'estimate' with speedglm?

Question

It is documented that broom::tidy can tidy a speedglm object: https://broom.tidyverse.org/reference/tidy.speedglm.html. In the following examples, broom::tidy a speedglm object returns some columns as 'fct' rather than 'dbl'. I guess it happens when there are one or more scientific notations in the column. I have tried to change option(digits = #, scipen = #) with no luck. Any suggestions would be appreciated.

library(broom)
library(speedglm)
#> Loading required package: Matrix
#> Loading required package: MASS
library(chest)  # get example data (diab_df)

m1 <- glm(Diabetes ~ Sex + Married, family = binomial(), data = diab_df)
tidy(m1) # works fine
#> # A tibble: 3 x 5
#>   term          estimate std.error statistic     p.value
#>   <chr>            <dbl>     <dbl>     <dbl>       <dbl>
#> 1 (Intercept) -0.803        0.157  -5.13     0.000000287
#> 2 Sex          0.0958       0.0925  1.04     0.300      
#> 3 Married     -0.0000364    0.0908 -0.000401 1.000

m2 <- speedglm(Diabetes ~ Sex + Married, family = binomial(), data = diab_df)
tidy(m2)  # returns <fct> for values with scintific notation: `estimate` and `p.value`
#> # A tibble: 3 x 5
#>   term        estimate     std.error statistic p.value 
#>   <chr>       <fct>            <dbl>     <dbl> <fct>   
#> 1 (Intercept) -8.034e-01      0.157    -5.13   2.87e-07
#> 2 Sex         " 9.578e-02"    0.0925    1.04   3.00e-01
#> 3 Married     -3.640e-05      0.0908   -0.0004 1.00e+00

^{Created on 2019-12-18 by the reprex package (v0.3.0)}