Underscore characters sometimes show up as blank space in user interface

Premiere Pro 25.4.1, Windows 11, german localisation

Premiere Pro doesn't show underscore characters in some parts of the user interface. The underscores are there. They just show up as blank spaces. Affected areas are the File Name field of the Export tab or the Graphics tab in the Text window. In the Graphics tab the underscores are just hidden while editing a text. If the text isn't in edit mode, the underscores show up. Exported files are named correctly including underscore character. And graphics contain all typed underscores.

I first noticed this behaviour after upgrading to 25.4. 

I tried changing screen resolution and scaling but the problem stayed.