Hello! Can you give us more details of the bug? Did you play normally, but when you reached interview with Oscar, the UI simply didn't show up? Or did you load a save file before or during the interview?
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Hi again, Aabii!
Another question: when you encountered the bug, were you playing an older build that you downloaded from here? We now have a new build available on Steam, which will be playable until March 10.
If you're still using the old build, please try the new one on Steam and let us know if the bug persists.