Using pseudo-hydrogen in VASP results in the wrong format in CONTCAR

I am using VASP to do the simulation of a slab, I used some pseudohydrogen to passivate the bottom side of the slab. After the structure optimization calculation, the CONTCAR I get looks like this:

 TiO2_mp-2657_slab_unitcell
1.0000000000000000
2.9691998959000001    0.0000000000000000    0.0000000000000000
0.0000000000000000    6.5806999206999999    0.0000000000000000
0.0000000000000000    0.0000000000000000   38.4453010559000035
Ti   O    H.   H1
8    16     1     1



The original POSCAR is:

 TiO2_mp-2657_slab_unitcell
1.0000000000000000
2.9691998959000001    0.0000000000000000    0.0000000000000000
0.0000000000000000    6.5806999206999999    0.0000000000000000
0.0000000000000000    0.0000000000000000   38.4453010559000035
Ti   O    H.66   H1.33
8    16     1     1


As shown above, the H.66 and H1.33 turn into H. and H1. Is this just a small bug of the input/output, or is it gonna affect the calculation results?