Altitude Slider for IE does not work

[BSS_LH]

Altitude slider functions in IE at Windy website.
Altitude slider functions in Chrome at API

Altitude slider does NOT function at IE at API.

Is this according to specification or a bug?

[jmh2002]

@TomSlavkovsky please check and reply :)

[TomSlavkovsky]

@MOLLH I just checked and altitude slider in IE works correctly.

[BSS_LH]

@TomSlavkovsky
Can you let me know the version of the IE?
By the way, I am talking about Internet Explorer, not Microsoft Edge.

My environment:
IE11, ver 11.765.17134.0
Updates: 11.0.125(KB4498206)