Assert in OSBA encoder

An assertion happens at the encoder when encoding OSBA using:

ivas_cod.exe -ism_sba 4 3 scripts/testv/stvISM1.csv scripts/testv/stvISM2.csv scripts/testv/stvISM3.csv scripts/testv/stvISM4.csv 128000 48 no_2 bit

and it reports

Assertion failed: nBitsAvailable > 0, file ..\lib_enc\ivas_stereo_mdct_stereo_enc.c, line 1013

The input file can be downloaded from https://dolby.box.com/s/4p8z7mwvmzsyiznyu84ffwh350ewrgwo