The forum page title does not appear to be showing up on mobile only. At one point I think the “Remove page title completely” option had been checked, but I’ve since unchecked it and the page title has not returned on mobile. If I deactivate Simple:Press it returns.
I’ve deactivated all other plugins and switched to the default 2021 WordPress theme but the page title still does not come back. As for the forum theme, currently I’m on Barebones Child Framework 2.0 but I also tried switching to Modern 2020 1.2.0 without any luck, so I don’t think it’s a theme thing.