Folder's OAuth2 refresh token issue

OAuth works well, but when I leave the yaak open for a while with no activity (or open the app next day), I get
“Plugin error: Failed to refresh access token with status=400 and body={error: “invalid_grant”, error_description: “Token is not active“}

OAuth provider here is keycloak, the initial flow works fine, it asks me for username / password, when provided, I am successfully authenticated and subsequent requests properly use the access_token. But after some time I have to open folder auth, click settings and remove token and start over.

I dont know whether this is actualy purely yaak issue or some miss-setup on my side. But it is kinda frustrating to remove token al the time.