HandleAdornments, such as LineHandleAdornment or CylinderHandleAdornment, whose Adornee is Workspace, can get offset from the origin when parts are inserted or removed from Workspace.
The offset seems to happen when parts are inserted or removed near the “bounding box” of the Workspace, and causing said bounding box to resize. For instance, inserting a part that extends laterally outside of the default baseplate causes an offset to occur.
The offset seemingly only updates whenever a part is inserted or removed. Moving, rotating or scaling a part has no effect.
Below is a video showing the bug in action. I’ve included the place file below as well.
handleadornment_workspace_bug.rbxl (51.7 KB)