How do you reset vtt.js tracks after changing video with player.attachSource() ?

[Eeel-12]

Hi,

With dash.js 4.7.1 i use player.attachSource(manifest.mpd) to change video on a same page without initializing the whole player, this works fine with customRenderingEnabled: false

With vtt.js enable when switching to another video with player.attachSource(manifest.mpd) the player render the new vtt track and the one from the previous video.

I tried to destroy the player with no luck, after initialize() vtt.js continue to render all the vtt tracks.

How can i "reset" vtt.js before loading a new video with player.attachSource() without re loading the whole player ?