[WoM/2.0] [UI Improvements] Crash when equipping an item for careers not currently played

[Zeropathic]

When playing the new Winds of Magic beta (version 2.0) and using UI Improvements to attempt to equip an item to a different career than the one I'm currently playing (say, I'm playing Mercenary but I try to equip an item to Huntsman), the game immediately crashes.

The crash happens even if VMF and UI Improvements are the only two mods enabled. It happens regardless of whether I'm on Official or Modded.

This is the error:
[Script Error]: scripts/mods/ui_improvements/ui_improvements_switch.lua:494: attempt to index local 'slot' (a nil value)

console-2019-08-07-08.15.27-c9fd91af-24ed-4e18-acfc-1482e2a3e8e5.log