Okay here's a more detailed test using version 2.0.2.
Spare Wiring:
I spawned in the item using create_pickup, completed the teleporter, spawned in a scrapper to remove the item then grabbed the scrap, I bought a turret and then left the stage via the teleporter. Next stage the turret was creating sparks when it entered combat.
Edit: Did this test again but also bought a drone on the next map, it also created sparks when it entered combat.
Manuscript:
I spawned in 1 Soldier's Syringe and 2 Manuscripts using create_pickup, I collected the Soldier's Syringe and then the first Manuscript, the descriptions were fine, I then picked up the second Manuscript and BetterUI moved it as it sorts by item count, the description of Soldier Syringe shows the description of the Manuscript.
I then tried this again with BetterUI's sorting disabled and it didn't happen, however I spawned a Topaz Brooch using create_pickup and grabbed it, I then spawned a scrapper and scrapped the Soldier's Syringe to move the Manuscript and Topaz Brooch on the UI, the description of Topaz Brooch shows the description of the Manuscript.
I tried the above test again but with ItemStatsMod instead of BetterUI and nothing wrong happened.
Edit: The descriptions are corrected on stage change.