MUI_LANGDLL_DISPLAY Problems

Hello

I used the multi lang Macro to choose between two languages (english & German)
Currently we are using nsis 2.33 with UMUI (1.00b1 ) and everything works..

For testing purposes I tried to upgrade to nsis 2.40 (also tried with 2.39) and the newes UMUI
but now the macro is ignored 🧟

Does somebody know what i probably missed?

I just realized that it only happen when using UMUI

if i change the script
!include UMUI.nsh
to
!include MUI.nsh

everything works fine!

See: