P: SDK: photo:getDevelopSettings() return nil or -999999 for Temperature and Tint after setting WB

[LightroomStatistics]

Lightroom version 13.3.1 and CameraRaw 16.3.1

After setting the White balance to "As shot" the photo:getDevelopSettings() doesn't return the correct develop settings for Temperature or Tint. All photos selected are RAW files.

Also there is a difference in behavior when running the script on images with or without having resetted the settings to original <Ctrl><Shift> R.

On new images the value of -999999 returned, however when you Reset the images with <Ctrl><Shift> R and run the script again, instead of the value for Temperature and Tint is nil.

Only after 1 or more seconds the correct values are returned.

First run on new images:

Now hitting the Reset settings <Ctrl><Shift> R key:
Same images still selected.

Code used:

local LrApplication = import("LrApplication")
local LrDialogs = import("LrDialogs")
local LrFunctionContext = import("LrFunctionContext")

local catalog = LrApplication.activeCatalog()

local logFilename = 'WhiteBalance_01.txt'
local MyLogger = import 'LrLogger' (logFilename)
MyLogger:enable("logfile")

local inspect = require "inspect"

local function main(context)
	LrDialogs.attachErrorDialogToFunctionContext(context)

	local photos = catalog:getTargetPhotos()
	MyLogger:info("#photos", #photos)

	local devSettings = { WhiteBalance = "As shot" }
	catalog:withWriteAccessDo("Apply White balance settings", function()
		local preset = LrApplication.addDevelopPresetForPlugin(_PLUGIN, "WB As Shot", devSettings)

		for _, photo in ipairs(photos) do
			MyLogger:info(photo:getFormattedMetadata("fileName"))
			photo:applyDevelopPreset(preset, _PLUGIN)
		end
	end)

	local message = "Loop 1\n"
	local nilValues = true
	local counter = 1
	while nilValues and (counter < 20) do
		nilValues = false

		for _, photo in ipairs(photos) do
			local fileName = photo:getFormattedMetadata("fileName")
			local developSetings = photo:getDevelopSettings()
			MyLogger:info(fileName, inspect(developSetings))

			-- Test for nil values
			if (nilValues == false) and
				(
					(developSetings.Temperature == nil) or
					(developSetings.Temperature == -999999) or
					(developSetings.Tint == nil) or
					(developSetings.Tint == -999999)
				) then
				nilValues = true
			end

			message = message ..
				string.format("image: %-15s temperature: %-8s tint: %-8s\n", fileName,
					developSetings.Temperature or "nil",
					developSetings.Tint or "nil")
		end

		if (nilValues == true) then
			counter = counter + 1
			LrTasks.sleep(0.5)

			message = message .. string.format("\n\nLoop %d -- wait for an extra %.1f seconds\n",counter, 0.5)
		end
	end

	LrDialogs.message("LightroomStatistics", message)
end

LrFunctionContext.postAsyncTaskWithContext("", main)