Yes, logs. Not lags.
Twice, I have been trying to stack the bank of a guild of mine and as I am doing so, the game has logged me out of that character.
Before, I has sold some stuff, re-did my gear and went to the bank in Marbruk(AD) to stack, and the game logged me out.
When I returned the first time, my sold items were back in my inventory, my gear to what it was, minus the gold I sold it for, but the items I stacked were in the bank.
The second time, I was in the middle of stacking, and it logged me out, the items I took from the bank were gone from my inventory AND the guild bank.
A game bug deleted 7 Laurels, a few hundred runes, and a handful of adamantite.
I play on the XBOX ONE
Zanaam-ri - AD Khajiit DPS MagBlade (Grand Master Crafter)
Haldrion - AD High Elf DPS MagSorc
Gedryn - EP Dark Elf DPS StamBlade
Amalene - DC Imperial Stamplar
Jeebo the Mad - AD Argonian Tank Dragonknight