sha1($salt.$pass) fails with salt larger than 49 characters

[WiteRabit]

Sorry, I have a correction to make. 49 character salts work with hashcat-cli64.exe.
cudaHashcat-plus64 only appears to work with 15 character salts. 16 character salts fail.

Please excuse any confusion!

Examples with cudaHashcat-plus64 (plaintext still 'bacon'):

15 character salt:
123456789012345:640b865c1bab96a5da28ee04683aca629baa4d7e
Password is recovered.

16 character salt:
1234567890123456:4469cd6e3a95c0e0d4dfe718655c81c001fab491
Password is not recovered. :/