Oh dear: this is terrible! Haven't they solved the melting glaze issue yet?
I experienced a similar thing on my wilshire pm in rose pop, but it is quite old. I took her to LV but they said they couldn't reglaze the handles. What they offered to do was to change them and they would charge me €400 for that. I ended up keeping her like that.
I don't think it is due to humidity: I keep all my LVs and SLGs in the same place and store them in their dustbags but nothing like that happened to any other item so far... It must be defective!
It is really very annoying, you should definitely go to LV and show to them your ruined clothes as well!
So sorry this happened to you! Please keep us updated.