Been playing plenty every other day at least(including earlier today) and out of the blue...

wilderness <100%hp 100%m 78%mv 7760tnl (3.00%)>
A silver chain flail crumbles into dust.
A flame blade crumbles into dust.
A potion of invisibility has evaporated from disuse.
A potion of return has evaporated from disuse.
A shimmering blue potion has evaporated from disuse.
An oil of sight has evaporated from disuse.
A shimmering blue potion has evaporated from disuse.
A metal canteen insulated in a wolves pelt crumbles into dust.
A black iron broadsword crumbles into dust.
A makeshift wooden trunk crumbles into dust.
A silver-shod mallet marked with an angel crumbles into dust.
An iron two-handed sword crumbles into dust.
A chain flail crumbles into dust.

Prayed but got not response. Why did this happen?

There are a few places where dropping items/gear causes them to crumble. Several shrines used to do this as well.

Dropped them all within the Aryth for about a minute while I walked by a thief to see if they would blackjack me. I didn't want them to empty my inventory.

I love irony.

n/t

Anytime you drop something underwater it will crumble later.

You can thank cheaters. Run to Aryth. Find a secluded spot. Tell friend 'It's 2e4s2w3s2d from Hamsah'. Remove all. Drop all.

I've dropped a number of things underwater and expected them to crumble, and they never did (in over 50 real hours).

I think some places might be exceptions to this, or maybe that you can drop stuff as long as you don't leave it there too long. Something like that, anyway.

Hrm weird... Maybe a thief somehow replaced all of that? heh probably not.. but that is very strange