How to work around an issue with inability of switching keyboard layout in a WinStore build

Hi, we have an issue similar to the one reported here: https://issuetracker.unity3d.com/issues/wsa-switching-language-when-player-is-running-doesnt-update-alphabet

Steps for us are quite easy: 1. To have several languages configured in an OS 2. Open an application 3. Focus into a text field 4. Change keyboard layout 5. Try typing anything

EXPECTED: Keyboard layout was changed

ACTUALLY: There is no reaction on layout change: the OS shows another language selected, but input symbols are still the same

NOTE: Clicking somewhere outside the application windows might help, but not every time

Can anybody please help with getting this resolved?