I have no idea when this started or what’s causing it, but recently building tools have broken in my game. It’s strange since it’s only this game, Six-Stud Standard Building, and not all players are experiencing problems.
It also happens to the F3X plugin when in this place. Everything is fine in my other games. I believe this issue is also appearing in some of my friends’ games.
UPDATE: Using an older F3X model fixed the tool, but it’s still broken for the Studio plugin. Might just be a bad update.
Replaced the F3X model and reinstalled the plugin, nothing happened. Since it’s only in a few games I assumed that Roblox changed something that’d break it.
I gave this solution in another topic. Your best bet, which is slightly evil, would be to insert the F3X plugin, modify what I suggested you, and then save the files as a .rbxm and put it in Users → [YOURNAME] → AppData → Local → Roblox → Plugins. If everything goes well, it should work.
I am sure SSSB uses an older version of the F3X Building Tools, hence why it works.