To be concise, this is the experience where the problem was occurring (https://www.roblox.com/games/447023520). It can be joined via other experiences or within the Roblox app and website, but the page itself seems to be missing.
None of my other experiences seem to be affected. I am running macOS Sequioa but this has happened on the Windows and iOS webpages as well. On any device’s Roblox app, the experience’s page still exists, but after it is played, it does not reappear on “Continue”.
Browsers have ranged from Safari, Edge, Google, and the Roblox app itself. Here is a archive .org link to show that it used to exist properly. Note that the name changed slightly, as the purpose of the experience changed over time as well. Realistic Autumn Forest | Vibe Hangout - Roblox
Expected behavior
I expect that when I click on the experience on the web, the page will show as it always has. On the app, I expect it to reappear in “Continue” after being played.