Launch parameter for changing culture no longer working with additional launch parameters. Also tested on packaged 4.19 project with same result.

Steps to Reproduce

1. Print GetCurrentCulture (or GetCurrentLanguage or GetCurrentLocale) on tick
2. Add -culture=es to Additonal Launch Parameters in Editor Preferences -> Play -> Play in Standalone Game (Advanced Dropdown)
3. Play in Standalone game

Observe in 4.17 culture will change, in 4.18 and 4.19 it will not.

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There's no existing public thread on this issue, so head over toAnswerHub just mention UE-58833 in the post.

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Cannot Reproduce
ComponentTools - Localization
Affects Versions4.184.19
Target Fix4.20
CreatedMay 8, 2018
ResolvedJun 4, 2018
UpdatedJun 13, 2018