The times mined statistic for blocks with multiple block types does not display the correct value. Torches for example have the types "torch" and "wall_torch", but only the statistic for "torch" is displayed in the GUI. The expected behaviour would be to display the sum of "torch" and "wall_torch".
A few other examples of blocks are: signs (oak_sign, oak_wall_sign, ...), cauldrons (cauldron, lava_cauldron, powder_snow_cauldron)
can confirm (1.18.1 -torch)