Vivaldi decodeURIComponent ???

Avec Vivaldi, contrairement à Safari et firefox, si j'ai :

window.location.href =

"http://mbp.local/Photo2Address/index.html?query={%22position%22:{%22lat%22:48.70436389,%22lng%22:2.23355,%22alt%22:72,%22dir%22:8.615617128},%22photo_url%22:%22http://mbp.local/Photos/Nikon_Transfer_2/2017/11/02/2017_11_02__07_35_12__IMG_3863.JPG%22,%22infos%22:{%22ImageWidth%22:4032,%22ImageHeight%22:3024,%22Orientation%22:%22Rotate%2090%20CW%22}}"

et que je décode puis prends la partie query de l'URL, j'obtiens, avec
Vivaldi :

"{%22position%22:{%22lat%22:48.70436389,%22lng%22:2.23355,%22alt%22:72,%22dir%22:8.615617128},%22photo_url%22:%22http://mbp.local/Photos/Nikon_Transfer_2/2017/11/02/2017_11_02__07_35_12__IMG_3863.JPG%22,%22infos%22:{%22ImageWidth%22:4032,%22ImageHeight%22:3024,%22Orientation%22:%22Rotate%2090%20CW%22}}"

comme c'esst du JSON, le parser n'accepte pas le %

par contre la même manip avec Safari, ou Firefox me donne :
decodeURIComponent(window.location.href).split('?query=')[1]
"{\"position\":{\"lat\":48.70436389,\"lng\":2.23355,\"alt\":72,\"dir\":8.615617128},\"photo_url\":\"http://mbp.local/Photos/Nikon_Transfer_2/2017/11/02/2017_11_02__07_35_12__IMG_3863.JPG\",\"infos\":{\"ImageWidth\":4032,\"ImageHeight\":3024,\"Orientation\":\"Rotate
90 CW\"}}"

le code JS invoqué :

if (window.location.href.indexOf('?query=') > 0) {
let query =
JSON.parse(decodeURIComponent(window.location.href).split('?query=')[1]);
for (let property in query) {
[...]

l'erreur que m'affiche la console Vivalsi :
Uncaught SyntaxError: Unexpected token % in JSON at position 1
at JSON.parse (<anonymous>)
at t.value (App.js:94)
at index.js:2114
at m.trigger (index.js:84)
at oe (index.js:1100)
at Object.<anonymous> (index.js:5)
at t (bootstrap 01c1ab1d286ee9c5968b:19)
at Object.<anonymous> (main.4f6f419a.js:300)
at t (bootstrap 01c1ab1d286ee9c5968b:19)
at bootstrap 01c1ab1d286ee9c5968b:62