Is this a bug in v1.50? orders_total doesn't output "text" but "value"

[inception]

i use zen cart 1.39 for some sites, they work well
but for the sites which use zen cart 1.50, i find an issue

in admin orders page,

Sub-Total: $30.00
Shipping cost: $2.00
Total: $32.00

for zen1.39, the "$32.00" is from the column "text" of sql table zen_orders_total
but for zen150, it is the record of the column "value" and plus "$" before it

from phpmyadmin, i tried modifying the column "text" from "$32.00" to "hello", it changes nothing in admin orders page, then i tried modifying the column "value" from "32.00" to "111.00", it shows "$111.00" in admin orders page

i guess this not correct, is there anything i missed?