I noticed something weird. I use the Read aloud functionality in a webapp (HTML5). The trouble is about highlighting the text. Everything is fine if the duration of the text reading is less than one minute. When the reading of the text exceeds one minute, the end of the text (beyond one minute) is not highlighted any more. This issue appears in each browser. However, the highlighting continues till the end of the text when in another format (ePub3).
Is it a bug? Did I miss something about Pubcoder configuration? How could I solve this issue?
Thanks for your help.