High decay rate on lanterns in inventory?

[Thalorane 63]

I have a 46 QL iron lantern that I keep in my backpack.  It has gained 8.43 decay in the last three weeks though I have not used it.  A friend sent me a 88.45 QL lantern this morning (14 hours ago) and I lit it just long enough to see how bright it was and then snuffed it.  I logged out shortly thereafter and just logged back in.  The new lantern in my inventory has 1.13 decay already.

 

Is there a decay rate issue?

 

Thank you.

[Ascorbic 265]

They have always decayed stupidly fast.  

[Thalorane 63]

1 hour ago, Ascorbic said:

They have always decayed stupidly fast.  

Hmm.  Hadn't decayed very much over the past 3 to 4 months; approximately 10 decay with infrequent use.