Roblox Forum

Quick Summary

• On 2026-05-12, one Roblox platform user reported that the Roblox app stayed open after leaving a game, and extra background processes kept using RAM.
• The same 2026-05-12 report says Roblox Studio playtesting had mouse/camera lag.
• As of 2026-05-12, the topic had 1 post and 1 participant, so this is an early bug signal, not a confirmed patch note.

What's New

1. Process behavior change (reported): Leaving a Roblox game did not fully end the Roblox app on 2026-05-12.
2. RAM stacking (reported): Rejoining games could leave multiple Roblox processes running in the background.
3. Studio playtest input issue (reported): Mouse/camera movement felt laggy in Roblox Studio playtest on 2026-05-12.

Before vs. After
[table]
[tr]
[th]Action[/th]
[th]Before (expected)</th]
[th]After (reported on 2026-05-12)</th]
[/tr]
[tr]
[td]Leave a game[/td]
[td]Roblox app closes fully[/td]
[td]Roblox app stays active in background[/td]
[/tr]
[tr]
[td]Join/leave a few games[/td]
[td]No extra leftover client processes[/td]
[td]More Roblox processes remain and use RAM[/td]
[/tr]
[tr]
[td]Playtest in Roblox Studio[/td]
[td]Smooth mouse + camera feel[/td]
[td]Laggy mouse + camera feel[/td]
[/tr]
[/table]
Developer Context
This looks like a Roblox platform client session/lifecycle issue, based on the 2026-05-12 community report in Roblox Developer Forum.
No official Roblox release-note reason is linked in that thread yet as of 2026-05-12.
So the "why" is still unconfirmed. My best guess is a client background-process bug, not an intended feature.
Why You Should Care

• If you are a player, this can eat RAM and make your PC feel slower after a few re-joins.
• If you are a creator, Studio playtest camera lag can make building and testing harder.
• If you run long sessions, this can stack frustration fast, so it is worth checking Task Manager after play sessions.
• Quick tip: fully quit Roblox after sessions, then reopen fresh before heavy Studio work.

FAQ

• Q: Is this an official Roblox update note?
  A: No. As of 2026-05-12, this is a community bug report thread, not a formal patch announcement.
• Q: How do I test if this is happening on my PC?
  A: On 2026-05-12 or later, join a game, leave, then open Task Manager and check if Roblox processes are still running.
• Q: Does this affect Roblox Studio too?
  A: The same report says yes, with mouse/camera lag during playtest in Roblox Studio.
• Q: What should I include if I post my own bug report?
  A: Add date (YYYY-MM-DD), OS, exact join/leave steps, process count, RAM usage before/after, and whether Studio playtest lag appears. This helps staff reproduce it faster.
• Q: Should I panic about account safety?
  A: This report is about app behavior and performance, not account hacking. Still, always log out of unknown sessions in account security if anything looks weird.

Sources

• Roblox Developer Forum - "Roblox Application Staying Active" (topic 4631671)