Language Switcher are not working on Magento 2.2.5

[Yuibaritone]

Preconditions

1. Magento 2.2.3
2. PHP 7.1.17

Steps to reproduce

1. I create a new Store views set and assign this to Main Website [Store]
2. I switch to another language (en->th) and (th->en)

https://www.picz.in.th/image/BL8CYE

Expected result

1. Expecting to be can Language Switch are working

Actual result

1. Language Switcher are not working

[magento-engcom-team]

Hi @Yuibaritone. Thank you for your report.
To help us process this issue please make sure that you provided the following information:

• Summary of the issue
• Information on your environment
• Steps to reproduce
• Expected and actual results

Please make sure that the issue is reproducible on the vanilla Magento instance following Steps to reproduce. To deploy vanilla Magento instance on our environment, please, add a comment to the issue:

@magento-engcom-team give me {$VERSION} instance

where {$VERSION} is version tags (starting from 2.2.0+) or develop branches (2.2-develop +).
For more details, please, review the Magento Contributor Assistant documentation.

@Yuibaritone do you confirm that you was able to reproduce the issue on vanilla Magento instance following steps to reproduce?

• yes
• no

@Yuibaritone, thank you for your report.
This is not a bug. Language switching in Magento 2 works in another way. Please
refer to the Community Forums or the Magento Stack Exchange site for advice or general discussion about this issue. The GitHub issue tracker is intended for Magento Core technical issues only.