Changed dashboard widget headlines do not remain

Hi. I have made a dashboard, and then made a copy of it and changed some widget headlines. All of this I have made with finnish as my qualtrics system language. When my colleague opens this copied dashboard with english as his qualtrics system language, the most of the changed headlines (however not all??) are shown to him as they were in the original dashboard. When he changes system language to finnish, everything is good - but he really needs to keep the system language as english, and still see the dashboard as I have intended it to be (in the copy). When I test the copied dashboard myself (changing system language from finnish to english), I see the same problem with the headlines. I can't really see no reason for the widget headlines to change when changing system language, when the dashboard is intended to be in finnish all the time, and I am not making any translations - just changing the headlines from other finnish texts to another. This is clearly an bug in the system, has anyone encountered it, and is there any way to fix it?