Unity Version Control window show variable name instead string value

Hi.
I try to use Unity Version Control on my ubuntu pc, but I got some problem.
Problem is Unity Version Control window show variable name, not text value.

When I create new child branch, I see this popup window.

See button text. It is CreateButton. Not Create. And other text is shown variable name, not text.

This happens in the Version Control window, even in the Project Settings.

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What is problem, and how can I fix it?