The character "#" followed by a number is pronounced as only "hashtag". The default behaviour should probably be "number N".
Example: /wikispeech/?lang=en&input_type=text&input=on+May+28+at+%23105. (%23 is encoded #)
Also, the tokens don't match the audio:
"tokens": [
{
"endtime": 0.155,
"orth": "on"
},
{
"endtime": 0.355,
"orth": "May"
},
{
"endtime": 1.055,
"expanded": "twenty eight",
"orth": "28"
},
{
"endtime": 1.185,
"orth": "at"
},
{
"endtime": 1.81,
"expanded": "hashtag 105",
"orth": "#105"
},
{
"endtime": 1.81,
"orth": "."
},
{
"endtime": 2.21,
"orth": ""
}
]