Equipped items drop on rejoin.

[DigiDK]

Mods: cealus-forge-3.2.0+1.20.1.jar curios-forge.5.9.0+1.20.1.jar EnigmaticLegacy-2.29.0.jar Patchouli-1.20.1-84-FORGE.jar
Recreation:

1. Create new world (creative, cheats on, peaceful)
2. Equip cursed ring, scroll of a thousand curses, enchanters pearl
3. rejoin
   then the scroll and pearl should be in your hotbar again

[DarkScorn]

Together with those, Emblem of Bloodstained Valor unequips as well, on Forge 1.18.2 40.2.21, Enigmatic Legacy 1.18.2, 2.25.0, Curios 5.0.9.2, Caelus 3.0.0.2.

[FranFkntastic]

Also experiencing this in 1.20.1

[Seveska]

Experiencing this with Pact of Infinite Avarice scroll, on a server running Cisco's Fantasy Modpack v4d, mc 1.19.2, Forge 43.3.5, Enigmatic Legacy 2.26.5. Item returns to inventory on relog, or drops on ground if inventory is full.

[CwumbTheCrumb]

yep, expiriencing the same in 1.20.1, now Testament of Contempt included