@ivo Thanks Ivo. Deleting browsing data improved things. However, when I click Customize color scale from the setting menu, I still get an invisible menu for adjusting colour. In the attached image, there should be a menu on the left, but all I see is a cross to close the menu. The small temperature icon that cycles through nearby locations also doesn't appear when clicking a place on map.

I also have this from error console:
{
"timestamp": 1601966682058,
"runningMs": 1735,
"type": "user",
"module": "Evented",
"msg": "Failed to call color2_wind: Cannot read property '0' of undefined",
"url": "https://www.windy.com/-Temperature-temp?temp,-42.974,147.225,9,i:pressure",
"ver": "27.0.2",
"target": "index",
"stack": "TypeError: Cannot read property '0' of undefined
at Object.createGradientArray (https://www.windy.com/v/27.0.2.ind.f945/index.js:35:2523)
at Object.getColor (https://www.windy.com/v/27.0.2.ind.f945/index.js:35:3438)
at Object.forceGetColor (https://www.windy.com/v/27.0.2.ind.f945/index.js:35:902)
at Object.colorChanged (https://www.windy.com/v/27.0.2.ind.f945/index.js:35:642)
at Object.emit (https://www.windy.com/v/27.0.2.ind.f945/index.js:16:372)
at h (https://www.windy.com/v/27.0.2.ind.f945/index.js:52:1057)
at Object.f [as set] (https://www.windy.com/v/27.0.2.ind.f945/index.js:52:1624)
at https://www.windy.com/v/27.0.2.ind.f945/index.js:62:1171
at https://www.windy.com/v/27.0.2.ind.f945/index.js:62:1263",
"deviceID": "342b2116-db36-0780-e968-b8f51b2d9362",
"error": " {
"stack": "TypeError: Cannot read property '0' of undefined
at Object.createGradientArray (https://www.windy.com/v/27.0.2.ind.f945/index.js:35:2523)
at Object.getColor (https://www.windy.com/v/27.0.2.ind.f945/index.js:35:3438)
at Object.forceGetColor (https://www.windy.com/v/27.0.2.ind.f945/index.js:35:902)
at Object.colorChanged (https://www.windy.com/v/27.0.2.ind.f945/index.js:35:642)
at Object.emit (https://www.windy.com/v/27.0.2.ind.f945/index.js:16:372)
at h (https://www.windy.com/v/27.0.2.ind.f945/index.js:52:1057)
at Object.f [as set] (https://www.windy.com/v/27.0.2.ind.f945/index.js:52:1624)
at https://www.windy.com/v/27.0.2.ind.f945/index.js:62:1171
at https://www.windy.com/v/27.0.2.ind.f945/index.js:62:1263",
"message": "Cannot read property '0' of undefined"
}",
"isOnline": true,
"latestBcast": "store: homeLocation (9ms ago at 1601966682049)
store: wasDragged (9ms ago at 1601966682049)
store: favPois (9ms ago at 1601966682049)
store: color2_temp (9ms ago at 1601966682049)
store: color2_wind (2ms ago at 1601966682056)",
"sessionName": "au-Mr Cycle",
"sessionCounter": 2,
"lang": "en",
"retina": true,
"size": "1440x900",
"glParticles": true,
"platform": "desktop",
"errorID": "failed-to-call-color2-wind-cannot-read-property-0-of-unde"
}