You are seeing the way the generic print function prints tribbles. If you want a tibble printed the same way as a data.frame use the print.data.frame() function instead of print(). Here is an example that shows some of the differences.
suppressPackageStartupMessages(library(tidyverse))
test_tbl <- tibble(
aa = c(5.555555555551, 0.13333, 100.3),
bb = c(3.3344444, 554444.123, 1123.556)
)
test_df <- data.frame(
aa = c(5.555555555551, 0.13333, 100.3),
bb = c(3.3344444, 554444.123, 1123.556)
)
# by default the generic print function only
# prints out the highest 3 digits dark and the
# rest grayed out (but a reprex won't show
# that). It only prints 2 digits
# after the decimal point
print(test_tbl)
#> # A tibble: 3 x 2
#> aa bb
#> <dbl> <dbl>
#> 1 5.56 3.33
#> 2 0.133 554444
#> 3 100 1124
# if you want to print out a tibble in the
# same way a data.frame is use print.data.frame
# instead of
print(test_df)
#> aa bb
#> 1 5.555556 3.334444e+00
#> 2 0.133330 5.544441e+05
#> 3 100.300000 1.123556e+03
print.data.frame(test_tbl)
#> aa bb
#> 1 5.555556 3.334444e+00
#> 2 0.133330 5.544441e+05
#> 3 100.300000 1.123556e+03
Created on 2018-03-01 by the reprex package (v0.2.0).