1. Version: Lightroom web/cloud
2: Android, Chrome shared album
3. Share album, generate link. Download photo from Lightroom via google chrome on Samsung flip phone. Post to instagram using instagram app.
4. Expected result: correct colour
Something is going wrong with color profiling. There is no option to select what color profile to convert to when a link is given for people to download a shared Lightroom album. So it's automatic. The image posts on instagram as desaturated, it looks similar to when AdobeRGB is incorrectly interpreted as sRGB. This needs to be fixed ASAP, as obviously the cloud/web based Lightroom shouldn't be unusable with the worlds largest web photo sharing site/app.
I've exported directly on my iPad Pro and also downloaded via chrome via Lightroom web and postin it to Instagram the colour is correct from both of those.
Two attachments show the difference both screenshots from instagram