TotallyARussian reported two long-standing bugs on the x86-64 beta: in #7117, a gamemode changed during a game reverts to the previous one on the next map; in #7118, subscribing to or unsubscribing from an addon while on a server unloads the server's content, turning models into errors.

In #next-update, Vitroze reported that after Alt+F4 → Cancel, opening the Problems menu and clicking outside loses focus on the main menu (x86-64 build 10211). Dezlo saw server-created menus not removing properly after cancelling the prompt. Earlier, Drago🐉 noted that closing GMod via Alt+F4 or the taskbar now brings up a confirmation menu.

In #next-update, Cynthia listed functions missing from the menu state on dev: Angle, CreateMaterial, GetLoadPanel, HTTP, http, LerpAngle, LerpVector, OrderVectors, UpdateLoadPanel and Vector. Rubat confirmed it and said the change wasn't silent: the changelog states "Remove some unused libs from menu state". He added that the wiki shouldn't list menu state functions at all, since the menu state isn't meant for modding. On GitHub, kila58's issue "CreateMaterial missing from menu state" was closed as not planned.

In #developer-talk, Callum showed GMod's main menu fully recreated with VGUI. He said VGUI will always be a little slower but it's fine for a main menu: about 300 FPS on the DarkRP server list versus 500 with HTML. Akiko noted that one upside of the HTML menu is it immediately shows when the HTML backend is broken.

Commit 693484 on main fixes is3DSkybox not resetting when returning from hooks, ships a higher quality Eli Vance face texture from the S1 repo and removes some unused libraries from the menu state.

Astralcircle reported that Lua errors with malformed data throw invalid UTF-8 code in markup.lua while the menu's Problems tab parses them. CornerPin could not reproduce it with error("\xF5") in any realm, and the issue was closed as not planned.