Custom Fiori like application Opening up in new tab without language Parameter

Customer is leveraging Fiori Launch pad for end users to login and perform job functions. Standard Fiori & Custom Fiori like applications configured into launch pad. End users provisioned with an ability to login to Launchpad with their choice of language for example EN, ZH, DE.

We come across below issue and like to get some thoughts around this subject.

• Custom Fiori like applications configured on the Launchpad opening up in new window tab without language parameter(sap-language=EN/ZH/DE). In detail, When end user login to Launchpad with language as DE and click on the custom Fiori tile, it opens up in new browser window without login language parameter as a query parameter(sap-language=DE).In this case, UI5 application is loading in EN since EN is default locale instead of DE(Login language).

Changed LPD_CUST configuration to load UI5 application with Component.js instead of index.html and tile is opening up within same window and login language is taken into account.

Challenge is to open up UI5 application in new window with login language from the launch pad. Appreciate any inputs.