Energy burst in BWE at 32kbps (ISM 1)

with 9241f7fe and this bitsream:

G2S5_-ism_1_32000_48.bit

command line IVAS_dec EXT 48 bit syn

there is an energy overshoot in the decoder synthesis between 1.47s and 1.49s as shown in the figure below:

• core
• coder_type
• synth float
• synth fixed
• diff
• spectrum