I have been having a certain issue with the Browse section of the Q Menu.
Generally, after starting a game, the browse menu functions properly. However, after a while (if it’s a certain time or something, I do not know), Garry’s Mod ceases to load the browser folders; after clicking the “+” icon next to the folder name, it will show an “L” icon that remains for the rest of the game.
Ordinarily the L icon gives way to the contents of the folder, but after a certain amount of time in-game, it will fail to do so, even if the file had been opened previously.
While I think HatMaker might have something to do with it, it has been persisting since reinstalling Garry’s Mod a few months back.