weird mask attack

Hello, I found weird thing when I executed oclHashcat-1.01 with -m 300

for example:
./oclHashcat64.exe -a 3 -m 300 --remove --status \
./mysql_hash.txt -o ../mysql_hash_result.txt \
./masks/rockyou-1-60.hcmask


----------OUTPUT------------
Session.Name...: oclHashcat
Status.........: Running
Input.Mode.....: Mask (?1) [1]
Hash.Target....: File (../hash/mysql/mysql_hash.txt)
Hash.Type......: MySQL
Time.Started...: 0 secs
Time.Estimated.: 0 secs
Speed.GPU.#1...: 0 H/s
Recovered......: 0/2 (0.00%) Digests, 0/1 (0.00%) Salts
Progress.......: 0/62 (0.00%)
Rejected.......: 0/0 (0.00%)
HWMon.GPU.#1...: 24% Util, 5c Temp, N/A Fan

Session.Name...: oclHashcat
Status.........: Running
Input.Mode.....: Mask (?1?2) [2]
Hash.Target....: File (../hash/mysql/mysql_hash.txt)
Hash.Type......: MySQL
Time.Started...: 0 secs
Time.Estimated.: 0 secs
Speed.GPU.#1...: 0 H/s
Recovered......: 0/2 (0.00%) Digests, 0/1 (0.00%) Salts
Progress.......: 0/2232 (0.00%)
Rejected.......: 0/0 (0.00%)
HWMon.GPU.#1...: 30% Util, 5c Temp, N/A Fan
...
...

in rockyou-1-60.hcmask file, there is no pre-defined CS [1],[2],[3],[4]
but oclHashcat was running normally with [1][2][3][4] type masks

Is it normal thing?
I don't know whether hashcat bug or not?