While displaying a Mapbox map, I noticed that the label of the city of Vevey is rendered twice. [1]

After some investigations, I couldn't find the reason for that. As I can see, the lower label is the admin_center [2] of the boundary relation but I haven't seen which object is the upper label.

Could someone familiar with administrative boundaries and/or Mapbox styling please take a look, if it is a mapping or rendering issue?

Thank you in advance.

[1] https://api.mapbox.com/styles/v1/mapbox/outdoors-v11.html?access_token=pk.eyJ1IjoibWFwYm94IiwiYSI6ImNpejY4M29iazA2Z2gycXA4N2pmbDZmangifQ.-g_vE53SD2WrJ6tFX7QHmA#13.91/46.46235/6.84379

[2] https://www.openstreetmap.org/node/3738814254