HTML5 audio fixes – Vivaldi Browser snapshot 1.15.1147.19
https://vivaldi.com/blog/snapshots/html5-audio-fixes-vivaldi-browser-snapshot-1-15-1147-19/

Changelog
[Regression] Click & drag to mark text fails at bottom of viewport VB-38818
[Regression] History page does not load history VB-39151
[Regression] Mouse gestures not reliable VB-38919
[Regression] No hand mouse pointer over links VB-38823
[Media] Broken sound from online radio and MP3 files VB-30381

らじるの対応したのかな