[4.0] Custom CONFIG.DND5E.tools additions don't actually make it to the toolIds

[Deyzeria]

Updating module to dnd5e 4.0, when you try to use the old way (deprecated)-

CONFIG.DND5E.toolIds.foo = 'module.compendium.bar'

it throws a deprecation warning, however also throws an error and makes it impossible to open any tool item sheet.

Adding to the new tool location- works to add to the tools list, however at that points, toolIds is already fully populated and it doesn't add the new tool.

CONFIG.DND5E.tools.foo = {
ability: "int",
id: 'module.compendium.bar',
}